Oracle VM VirtualBox SDK Changelog

What's new in Oracle VM VirtualBox SDK 7.0.16 Build 162802

Apr 17, 2024

This is a maintenance release. The following items were fixed and/or added:
VMM: Fixed a guru meditation executing nested-guests using the KVM hypervisor in the guest on Intel hosts (bug #21805)
VMM: Fixed Linux VM crash on some recent AMD models
USB: Fixed issue when EHCI controller was mishandling short packets (bug #20726)
Audio: Introduced general improvements
VBoxManage and vboximg-mount: Updated usage information and documentation (bugs #21895, #21992 and #21993)
Guest Control: Fixed starting Windows guest processes in the correct Windows session (7.0 regression)
Linux Host: Fixed issue when VBox.sh was deleting wrong VBoxSVC IPC socket when VM was started using sudo (bug #20928)
Linux Host: Fixed kernel modules build failure when using GCC 13.2
macOS Host: Fixed issue when App Nap was affecting VM performance (bug #18678)
Linux Host and Guest: Added fixes related to UBSAN warnings discovered on recent Linux distributions (bug #21877)
Linux Host and Guest: Added possibility to prevent kernel module from automatic loading during system boot by adding mod_name.disabled=1 into kernel command line
Linux Host and Guest: Added initial support for kernel 6.9 (bug #22033)
Linux Host and Guest: Fixed mk_pte warning introduced in kernel 6.6 (bug #21898)
Linux Guest Additions: Added initial support for kernel 6.8
Windows Guest Additions: Introduced general improvements in graphics area

New in Oracle VM VirtualBox SDK 7.0.14 Build 161095 (Jan 16, 2024)

New in Oracle VM VirtualBox SDK 7.0.12 Build 159484 (Oct 17, 2023)

VMM: Fixed using a debugger inside the guest under certain circumstances (bugs #21413 and #21546)
VMM: Fixed detection of VT-x being used by other hypervisors (bug #21867)
VMM: Introduced additional improvements in Split Lock Detection feature of recent Intel CPUs on Linux hosts (bug #20180)
GUI: Fixed issue when the nested hardware virtualization setting was not displayed in the VM details panel (bug #21707)
GUI: Introduced NLS update for Croatian, Indonesian, Italian, Japanese, Korean, Dutch and Turkish languages as well as added general look-and-feel improvements
Devices: Fixed black screen in Windows guests with multiple guest screens when 3D is disabled (7.0.10 regression)
Devices: Fixed PCI device identifiers for the VirtIO network interface (bug #21516)
Devices: Fixed VLAN support for the VirtIO network interface (bug #21778)
Devices: Fixed loading saved states when a TPM is configured (7.0.10 regression, bug #21773)
Networking: Fixed memory leaks in the VBoxIntNetSwitch process on macOS (bug #21752)
Networking: Fixed TCP connections with IP addresses ending on .2 when the NAT network attachment is used (bug #21513)
Audio: Fixed switching host audio devices on Windows hosts using the WAS backend (bugs #20431, #21517, #20630 and #20723)
VRDP: Added general improvements
VBoxManage: Added improvements for "list usbfilters" command
Unattended: Added kick start file support for Oracle Linux 8 and Oracle Linux 9.
Main: Added more Linux OS subtypes
Host Services: Fixed Guest Properties service crash under rare circumstance
Linux Host and Guest: Fixed few "field-spanning write" kernel warnings (bugs #21410 and #21862)
Linux Guest Additions: Added more fixes for RHEL 8.9 and 9.3 kernel
Linux Guest Additions: Added more fixes for kernel 6.4
Linux Guest Additions: Added initial support for OpenSUSE 15.5 kernel
Linux Guest Additions: Added initial support for kernels 6.5 and 6.6
Linux Guest Additions: Added version reporting for "rcvboxadd status-kernel" and "rcvboxadd status-user" commands
BIOS: Restored support for ISA SCSI HBAs in the BIOS (bug #21736)

New in Oracle VM VirtualBox SDK 7.0.10 Build 158379 (Jul 18, 2023)

OCI: Introduced general improvements
VMM: Fixed sluggish performance starting with macOS Ventura 13.3 (bug #21563, bug#21596)
VMM: Fixed a bug while walking page tables while executing nested VMs causing flooding of the release log as a consequence (Intel hosts only, bug #21551)
GUI: Added general improvements
TPM: Fixed a crash when a VM has a TPM version 1.2 configured (bug #21622)
3D: Initial support for OpenGL 4.1
3D: Fixed various graphics issues with Windows 11 guests (bugs #21136, #21515)
Guest Control/VBoxManage: Fixed parameter "--ignore-orphaned-processes"
Guest Control/VBoxManage: Fixed behavior of how handling argument 0 for a started guest process works: One can now explicitly specify it with the newly added option "--arg0". This will effectively restore the behavior of former VirtualBox versions
Audio: Also use the PulseAudio backend when pipewire-pulse is running instead of falling back to ALSA (bug #21575)
NAT: Adjusted UDP proxy timeout from 18-21 to 21-24 range to respect intended 20 second timeout (bug #21560)
Linux Host: Added initial support for Indirect Branch Tracking (bug #21435)
Linux Host: Added initial support for kernel 6.5 (NOTE: Guest Additions do not support kernel 6.5 yet)
Solaris Host: Introduced general improvements in the installer area
Linux Host and Guest: Improved condition check when kernel modules need to be signed
Linux Host and Guest: Added initial support for RHEL 8.8 (bug #21692), 8.9 (bug #21690) and 9.3 (bugs #21598 and #21671) kernels
MacOS Host and Guest: Introduced general improvements in the installer area
Windows Host and Guest: Introduced ECDSA support (bug #21621)
Linux Guest Additions: Fixed issue when kernel modules were rebuilt on each boot when guest system has no X11 installed
Linux Guest Additions: Added initial support for kernel 6.4
Linux Guest Additions: Fixed issue when vboxvideo module reloading caused kernel panic in some guests (bug #21740)
Linux Guest Additions: Introduced general improvements in the installer area
Windows Guest Additions: Introduced general improvements in graphics drivers area

New in Oracle VM VirtualBox SDK 7.0.8 Build 156879 (Apr 18, 2023)

VMM: Fixed EFLAGS.TF handling for CPUID instructions when Hyper-V is used (bug #17961)
VMM: Fixed MONITOR/MWAIT crash with Solaris guests when Hyper-V is used on Windows 11
VMM: Introduced general improvements in nested visualization area
VMM: Fixed triple fault related guru meditations for UEFI guests starting with macOS Ventura 13.3 (bug #21563)
GUI: Brought back Restore current snapshot checkbox of Close VM dialog (bugs #21189, #21491)
GUI: Fixes and validation for VM settings USB filters editor, filter port value is now properly saved/restored
GUI: Fixes for VM name and OS type embedded editors of Details pane
GUI: Cloud related wizards should now propose enabled profiles before disabled
Oracle VM VirtualBox Extension Pack: Fixed shipping the cryptographic support module for full VM encryption
E1000: Fixed possible guru meditation when changing network attachments (bug #21488)
virtio-net: Follow up fixes for FreeBSD 12.3 and pfSense 2.6.0 (bug #21201)
3D: Fixed various graphics issues with Windows 7 guests (bugs #21129, #21196, #21208, #21521)
Main/UefiVariableStore: Added API to add signatures to the MOK list (Machine Owner Key)
VBoxManage: Introduced modifynvram enrollmok sub-command to enroll Machine Owner Key into NVRAM, so Linux guest kernel can pick it up in order to verify signature of modules signed with this key
Guest Control/Main: Fixed deleting files via built-in toolbox
Linux host: Added possibility to bypass kernel modules signature verification once VBOX_BYPASS_MODULES_SIGNATURE_CHECK="1" is specified in /etc/vbox/vbox.cfg, useful in case if Linux distribution does not provide necessary tools to verify kernel module signature
Linux Guest Additions and host Installer: Improved detection if system is running systemd as the init process
Linux Guest Additions and host drivers: Introduce initial support for kernel 6.3
Linux Guest Additions: Added possibility to bypass kernel modules signature verification once VBOX_BYPASS_MODULES_SIGNATURE_CHECK="1" is specified in /etc/virtualbox-guest-additions.conf, useful in case if Linux distribution does not provide necessary tools to verify kernel module signature
Linux Guest Additions: Added experimental support for kernel modules and user services reloading in the end of installation process, thus guest system reboot after Guest Additions (7.0.8 and newer) upgrade is no longer required in general case
Linux Guest Additions: Fixed vboxvideo build issue with RHEL 8.7, 9.1 and 9.2 kernels (bugs #21446 and #21450)

New in Oracle VM VirtualBox SDK 7.0.6 Build 155176 (Apr 18, 2023)

VMM: Fixed EFLAGS.TF handling for CPUID instructions when Hyper-V is used (bug #17961)
VMM: Fixed MONITOR/MWAIT crash with Solaris guests when Hyper-V is used on Windows 11
VMM: Introduced general improvements in nested visualization area
VMM: Fixed triple fault related guru meditations for UEFI guests starting with macOS Ventura 13.3 (bug #21563)
GUI: Brought back Restore current snapshot checkbox of Close VM dialog (bugs #21189, #21491)
GUI: Fixes and validation for VM settings USB filters editor, filter port value is now properly saved/restored
GUI: Fixes for VM name and OS type embedded editors of Details pane
GUI: Cloud related wizards should now propose enabled profiles before disabled
Oracle VM VirtualBox Extension Pack: Fixed shipping the cryptographic support module for full VM encryption
E1000: Fixed possible guru meditation when changing network attachments (bug #21488)
virtio-net: Follow up fixes for FreeBSD 12.3 and pfSense 2.6.0 (bug #21201)
3D: Fixed various graphics issues with Windows 7 guests (bugs #21129, #21196, #21208, #21521)
Main/UefiVariableStore: Added API to add signatures to the MOK list (Machine Owner Key)
VBoxManage: Introduced modifynvram enrollmok sub-command to enroll Machine Owner Key into NVRAM, so Linux guest kernel can pick it up in order to verify signature of modules signed with this key
Guest Control/Main: Fixed deleting files via built-in toolbox
Linux host: Added possibility to bypass kernel modules signature verification once VBOX_BYPASS_MODULES_SIGNATURE_CHECK="1" is specified in /etc/vbox/vbox.cfg, useful in case if Linux distribution does not provide necessary tools to verify kernel module signature
Linux Guest Additions and host Installer: Improved detection if system is running systemd as the init process
Linux Guest Additions and host drivers: Introduce initial support for kernel 6.3
Linux Guest Additions: Added possibility to bypass kernel modules signature verification once VBOX_BYPASS_MODULES_SIGNATURE_CHECK="1" is specified in /etc/virtualbox-guest-additions.conf, useful in case if Linux distribution does not provide necessary tools to verify kernel module signature
Linux Guest Additions: Added experimental support for kernel modules and user services reloading in the end of installation process, thus guest system reboot after Guest Additions (7.0.8 and newer) upgrade is no longer required in general case
Linux Guest Additions: Fixed vboxvideo build issue with RHEL 8.7, 9.1 and 9.2 kernels (bugs #21446 and #21450)

New in Oracle VM VirtualBox SDK 7.0.6 Build 155176 (Jan 17, 2023)

New in Oracle VM VirtualBox SDK 7.0.4 Build 154605 (Nov 18, 2022)

New in Oracle VM VirtualBox SDK 7.0.0 Build 154219 (Oct 20, 2022)

New in Oracle VM VirtualBox SDK 7.0.0 Build 153978 (Oct 11, 2022)

Virtual machines can be fully encrypted now, including the VM config logs and saved states (CLI only for now)
OCI: Cloud virtual machines can be added to Virtual Machine Manager and controlled as local VMs
OCI: Cloud networks can now be configured via Network Manager tool same way as it is done for Host-only and NAT networks
GUI: Added a new utility similar to “top” or “resource monitor” which lists peformance statistics (CPU usage, RAM usage, disk I/O rate, etc.) of running guests
GUI: Reworked the new vm wizard to integrate the unattended guest OS installation and to have a more streamlined work flow
GUI: Added a new help viewer widget which enables the user manual to be navigated and searched
GUI: Adding new notification center unifying most of running progresses and error reporting around the GUI
GUI: Improved theme support on all platforms. Linux and macOS use native engine while for Windows host it is separately implemented.
GUI: Large icon update.
Audio recording: Now using Vorbis as the default audio format for WebM containers. Opus is no longer being used.
Audio: Added “default” host driver type to make it possible to move VMs (appliances) between different platforms without the need of changing the audio driver explicitly. When the “default” driver is selected, the best audio backend option for a platform will be used. This is the default for newly created VMs.
Guest Control: Implemented initial support for automatic updating of Guest Additions for Linux guests
Guest Control: Implemented ability to wait for and/or reboot the guest when updating Guest Additions via VBoxManage
VBoxManage: Added Guest Control “waitrunlevel” sub-command to make it possible to wait for a guest to reach a certain run level
Windows hosts: Added experimental support of running autostarted VMs in session 0, to allow running VMS even when a usser is not being logged in (disabled by default, please consult the manual)
macOS host: Dropped all kernel extensions. VirtualBox relies fully on the hypervisor and vmnet frameworks provided by Apple now. At the moment the implementation lacks “Internal Networking” functionality. This will be provided at a later date.
macOS host: Providing a Developer Preview package for systems with an Apple silicon CPU. This is unsupported work in progress, and is known to have very modest performance.
Linux Guest Additions: Reworked guest screen re-size functionality, added basic integration with some of guest Desktop Environments
Devices: Implemented new 3D support based on DirectX 11 (and DXVK on non Windows hosts)
Devices: Added virtual IOMMU devices (Intel and AMD variant)
Devices: Added virtual TPM 1.2 and 2.0 devices
Devices: The EHCI and XHCI USB controller devices are now part of the open source base package
EFI: Added support for Secure Boot
Debugging: Added experimental support for guest debugging through GDB and highly experimental support for guest debugging through KD/WinDbg
In addition, the following items were fixed and/or added:
OCI: Cloud networking functionality is enhanced for local VMs, now local VMs could be connected to cloud networking
GUI: Improved behavior of the virtual machine list and various VM related tools in case multiple items are selected
GUI: On available platforms, added a new option to disable the host’s screensaver
GUI: Reworked global preferences, machine settings and the wizards to improve stability and usability
GUI: Improving mouse handling in multi-monitor case on X11 platform
GUI: Medium enumeration engine was reworked to improve permormance
GUI: NAT Network stuff was moved from global preferences to global Network Manager tool
GUI: Extension Pack Manager was moved from global preferences to global tools
GUI: Improved overall accessibility
GUI: Migrating to recent Qt versions.

New in Oracle VM VirtualBox SDK 6.1.38 Build 153438 (Sep 1, 2022)

New in Oracle VM VirtualBox SDK 6.1.36 Build 152435 (Jul 20, 2022)

The following items were fixed and/or added:
VMM: Fixed possible Linux guest kernel crash when configuring Speculative Store Bypass for a single vCPU VM
GUI: In the storage page of the virtual machine settings dialog, fixed a bug which disrupted mouse interaction with the native file selector on KDE
NAT: Prevent issue when host resolver incorrectly returned NXDOMAIN for unsupported queries (bug #20977)
Audio: General improvements in saved state area
Recording: Various fixes for settings handling
VGA: Performance improvements for screen updates when VBE banking is used
USB: Fixed rare crashes when detaching a USB device
ATA: Fixed NT4 guests taking a minute to eject CDs
vboximg-mount: Fixed broken write support (bug #20896)
SDK: Fixed Python bindings incorrectly trying to convert arbitrary byte data into unicode objects with Python 3, causing exceptions (bug #19740)
API: Fixed an issue when virtual USB mass storage devices or virtual USB DVD drives are added while the VM is not running are by default not marked as hot-pluggable
API: Initial support for Python 3.10
API: Solaris OS types cleanup
Windows host: Fixed regression in 6.1.32 leading to guest hangs when Hyper-V is used (bug #20787)
Windows host: Fixed possible issues with saving and restoring VM state when using Hyper-V/NEM mode
Linux and Solaris hosts: Allow to mount shared folder if it is represented as a symlink on a host side (bug #17491)
Linux Host and Guest drivers: Introduced initial support for kernels 5.18, 5.19 and RHEL 9.1 (bugs #20914, #20941)
Linux Host and Guest drivers: Better support for kernels built with clang compiler (bugs #20425 and #20998)
Solaris Guest Additions: General improvements in installer area
Solaris Guest Additions: Fixed guest screen resize in VMSVGA graphics configuration
Linux and Solaris Guest Additions: Fixed multi-screen handling in VBoxVGA and VBoxSVGA graphics configuration
Linux and Solaris Guest Additions: Added support for setting primary screen via VBoxManage
Linux and Solaris Guest Additions: Fixed X11 resources leak when resizing guest screens
Linux and Solaris Guest Additions: Fixed file descriptor leak when starting a process using guest control (bug #20902)
Linux and Solaris Guest Additions: Fixed guest control executing processes as root
Linux Guest Additions: Improved guests booting time by preventing kernel modules from being rebuilt when it is not necessary (bug #20502)
Windows Guest Additions: Fixed VBoxTray crash on startup in NT4 guests on rare circumstances

New in Oracle VM VirtualBox SDK 6.1.32 Build 149290 (Jan 18, 2022)

New in Oracle VM VirtualBox SDK 6.1.30 Build 148432 (Nov 23, 2021)

New in Oracle VM VirtualBox SDK 6.1.28 Build 147628 (Oct 19, 2021)

New in Oracle VM VirtualBox SDK 6.1.24 Build 145767 (Jul 20, 2021)

New in Oracle VM VirtualBox SDK 6.1.22 Build 144080 (Apr 30, 2021)

New in Oracle VM VirtualBox SDK 6.1.20 Build 143896 (Apr 21, 2021)

New in Oracle VM VirtualBox SDK 6.1.18 Build 142142 (Jan 20, 2021)

New in Oracle VM VirtualBox SDK 6.1.16 Build 140961 (Oct 20, 2020)

New in Oracle VM VirtualBox SDK 6.1.14 Build 140239 (Sep 5, 2020)

New in Oracle VM VirtualBox SDK 6.1.12 Build 139181 (Jul 15, 2020)

New in Oracle VM VirtualBox SDK 6.1.10 Build 138449 (Jun 6, 2020)

New in Oracle VM VirtualBox SDK 6.1.8 Build 137981 (May 16, 2020)

New in Oracle VM VirtualBox SDK 6.1.4 Build 136177 (Feb 20, 2020)

New in Oracle VM VirtualBox SDK 6.1.2 Build 135662 (Jan 15, 2020)

New in Oracle VM VirtualBox SDK 6.1.0 Build 135406 (Dec 11, 2019)

This is a major update. The following major new features were added:
Implemented support for importing a virtual machine from Oracle Cloud Infrastructure
Extended support for exporting a virtual machine to Oracle Cloud Infrastructure, allowing the creation of multiple virtual machines without re-uploading. Also added option to export a VM to the cloud using the more efficient variant "paravirtialized", and to specify free-form tags for cloud images
Virtualization core: Support for nested hardware-virtualization on Intel CPUs (starting with 5th generation Core i, codename Broadwell), so far tested only with guest running VirtualBox
Graphics: New style 3D support (with VBoxSVGA and VMSVGA) remains, old style 3D support (with VBoxVGA) has been completely removed
Shared Clipboard: Implemented experimental support for file transfers (Windows hosts/guests only at the moment). Needs to be enabled via VBoxManage (disabled by default). In addition, the following items were fixed and/or added:
Virtualization core: Drop recompiler, i.e. running VMs now needs a CPU supporting hardware virtualization
Runtime: Works now on hosts with many CPUs (limit now 1024)
Appliance and Cloud Import: Add field for defining firmware type (not part of OVF spec and thus manual in the Appliance case, for OCI it is automatically taken from the instance information)
GUI: Improved the VISO creation and file manager dialogs
GUI: Virtual machine list of VirtualBox Manager was improved. Machine groups are now more obvious visually and VM search functionality has been improved. Global Tools element can now be pinned in place, to avoid scrolling it with rest of machine list
GUI: Virtual machine details pane is now extended with embedded editors for selected VM attributes, allowing user to edit them on-the-fly byi clicking corresponding hyper-links without opening VM settings dialog
GUI: Details pane provides more complete information
GUI: Internal medium enumeration routines were optimized to reduce the load and optimize the performance in cases when user have lots of media registered. Also, we again allowed to add existing media (and create new) via Virtual Media Manager
GUI: More consistent medium selection (both showing known images and allowing to select using the file picker)
GUI: VM storage settings page was adjusted a bit in usability regard. User is now allowed to change controller bus type and can move attachments between the controllers by using drag and drop
GUI: Storage and Network settings pages bug-fixes and usability optimization
GUI: Added a new soft (virtual) keyboard enabling arbitrary keyboard input to guests, including multimedia keys
GUI: Fixed crash in cloud related wizards when accessibility functionality was enabled
GUI: Show VM CPU load as part of status bar CPU indicator
GUI: Improved and extended the Session Information dialog
GUI: Fixed/improved mouse pointer scaling
GUI: Some issues related to mouse integration cursor scaling were addressed (bug #14366), more to go
GUI: Fix and unify geometry save/restore in various dialogs
GUI: Added the missing restriction options for disabling new functionality such as the VISO creator
GUI: Popup messages mouse click fix
Graphics: Remove 3D support for VBoxVGA (old one deprecated with 6.0)
Graphics: Additional texture format support on Windows host
Graphics: Improved fix for flickering on Windows host
Input: Added support for horizontal scrolling in the PS/2 mouse device using the IntelliMouse Explorer protocol. Note that this support is automatically used by Linux guests but not by Windows guests
vboximg-mount: Experimental support for direct read-only access to NTFS, FAT and ext2/3/4 filesystems inside a disk image without the need for support on the host
vboximg-mount: Now also available on Linux host
Storage: Experimental support for virtio-scsi, for both hard disks and optical drives (including boot support in BIOS)
Storage: For optical drive emulation fix empty host drive crash
USB: Improvements for EHCI controller implementation
USB: Filter can now specify port path, uniquely identifying a port in a system
NAT: Fix TFTP OACK response, send only if request has options
NAT Network: Use non-blocking sockets on Linux for accepted incoming connections (port forwarding)
PCnet-ISA: Added new network adapter type, currently CLI only
Audio: Allow changing the host audio backend while the VM is in saved state
ACPI: Report NVMe controller
VGA: Improve hardware and BIOS compatibility
VBoxSVGA/VMSVGA: Support YUV2 and related texture formats with hosts using OpenGL (macOS and Linux), which accelerates video playback when 3D is enabled by delegating the color space conversion to the host GPU
VBoxSVGA/VMSVGA: Several drawing fixes for the 3D case
VMSVGA 3D: Fixed OpenGL compressed textures
VBoxManage: More cloud functionality coverage, e.g. starting a cloud instance
VBoxManage: As part of the guest control feature support moving multiple source files/directories to a target directory
Guest Control/VBoxManage: Added support for specifying multiple sources when renaming guest files
VBoxManage: Show "unrestricted guest" and "nested HW virtualization" CPU features when listing the host information
API: Reduce the amount of leftovers from Move VM function
Shared Clipboard: Implemented experimental support for file transfers for Linux hosts on Windows guests (disabled by default)
SMBIOS: Store system UUID in little endian format which is the default for new VMs, while existing VMs stick to the old VirtualBox behavior of storing them in big endian format for backwards compatibility to avoid breaking the activation status of Windows VMs
VBoxSDL frontend: Fixed running on Windows hosts
macOS host: Fix VM crashes (most visible on macOS Catalina)
Linux host: Improve vboxweb systemd service dependency information
Linux host: Drop PCI passthrough, the current code is too incomplete (cannot handle PCIe devices at all), i.e. not useful enough
Linux host and guest: Support Linux 5.4 (bug #18945)
Linux host and guest: Force disabling of kernel module signing during build (user can do it afterwards)
Windows host: When possible, distinguish USB devices by port number; helps with accurate capturing of devices when multiple otherwise identical devices are connected
Windows Guest Additions: Many fixes for drawing problems in the driver for VBoxSVGA
Windows Guest Additions: Fixes for legacy VBoxVGA adapter, restore previously working cases
Windows Guest Additions: Restore VHWA functionality for VBoxSVGA
Windows guest: DXVA implementation for WDDM driver
Documentation: Updated supported host operating systems, added few new manual pages (more to come later)
EFI: Switch to newer firmware code base and add NVRAM support, should improve compatibility with OSes significantly
EFI: Added support for booting from APFS
EFI: Added support for non-standard SATA and NVMe boot device paths created by OS X
EFI: Modified updated EFI code base to support older OS X guests again

New in Oracle VM VirtualBox SDK 6.0.14 Build 133895 (Oct 16, 2019)

New in Oracle VM VirtualBox SDK 6.1.0 Build 133315 Beta 1 (Sep 16, 2019)

This is a major update. The following major new features were added:
Implemented support for importing a virtual machine from Oracle Cloud Infrastructure
Extended support for exporting a virtual machine to Oracle Cloud Infrastructure, allowing the creation of multiple virtual machines without re-uploading. Also added option to export a VM to the cloud using the more efficent variant "paravirtialized"
Virtualization core: support for nested hardware-virtualization on Intel CPUs (starting with 5th generation Core i, codename Broadwell)
Graphics: new style 3D support (with VBoxSVGA and VMSVGA) remains, old style 3D support (with VBoxVGA) has been completely removed
In addition, the following items were fixed and/or added:
GUI: Improved the VISO creation and file manager dialogs
GUI: Virtual machine list of VirtualBox Manager was improved. Machine groups are now more obvious visually and VM search functionality has been improved. Global Tools element can now be pinned in place, to avoid scrolling it with rest of machine list
GUI: Virtual machine details pane is now extended with embedded editors for certain VM attributes which we decided as the most important, allowing user to edit them on-the-fly by clicking corresponding hyper-links without opening VM settings dialog
GUI: Internal medium enumeration routines were optimized to reduce the load and optimize the performance in cases when user have lots of media registered. Also, we again allowed to add existing media (and create new) via Virtual Media Manager
GUI: VM storage settings page was adjusted a bit in usability regard. User is now allowed to change controller bus type and can move attachments between the controllers by using drag and drop
GUI: Added a new soft (virtual) keyboard enabling keyboard inputs to guests
GUI: Improved and extended the Session Information dialog
Input: Added support for horizontal scrolling in the PS/2 mouse device using the IntelliMouse Explorer protocol. Note that this support is automatically used by Linux guests but not by Windows guests
vboximg-mount: Experimental support for direct read-only access to NTFS, FAT and ext2/3/4 filesystems inside a disk image without the need for support on the host

New in Oracle VM VirtualBox SDK 6.0.10 Build 132072 (Jul 16, 2019)

New in Oracle VM VirtualBox SDK 6.0.6 Build 130049 (May 15, 2019)

New in Oracle VM VirtualBox SDK 6.0.6 Build 130049 (Apr 17, 2019)

Virtualization core: nested AMD virtualization fixes
User interface: fixed copying directories in file manager
User interface: fixed operation progress in file manager when copying content
User interface: fixed operation progress when deleting snapshots
User interface: fixed unattended installation of recent Ubuntu guests
User interface: various additional improvements
Storage: fixed loading saved states for LsiLogic devices (6.0.0 regression; bug #18263)
Storage: fixed fixed reading certain QCOW2 images and support version 3 of the format readonly
Storage: Improved IDE PCI emulation to allow NetWare IDE drivers to use bus-mastering
Graphics: Improved VMSVGA support to work with old X servers which previously showed only a badly scrambled screen
Graphics: fixed invisible mouse cursor with VMSVGA emulation and without mouse integration (bug #18239)
Graphics: make EFI work with VMSVGA emulation (bug #18282)
Graphics: remember last guest screen size VMSVGA emulation
Graphics: fix RDP to guests using VMSVGA emulation
Graphics: various additional VMSVGA emulation fixes
Audio: implemented audio device enumeration for the DirectSound backend
Network: fixed unwanted padding bytes in Windows host adaptor network packets (bug #18202 and bug #18355)
Serial: fixed possible crash on Windows when using a host device (6.0.0 regression; bug #18319)
Serial: fixed loopback handling in the emulation causing garbage to be sent during boot with Linux guests (6.0.0 regression; bug #18319)
Shared folders: fixed duplicate folders after restoring a saved state (bug #18373 and other)
Drag and drop: fixed copying files from guest host (bug #18305)
Recording: fixed modifying settings via VBoxManage (bug #18494)
VBoxManage: crash fix (bug #18341)
Fixed hangs during failed virtual machine start-up
Windows host: fix unwanted wake-ups from standby (bug #18549)
Windows host: disallow Pause as a host key (bug #18482)
Linux host and guest: support Linux 5.0 and 5.1, thank you Valdis Kletnieks (see also bug #18515)
Linux host: support kernel 4.4.169 (bug #18315)
Linux host: fix logging when building Linux kernel modules (bug #18226)
Linux host: clarified building Linux host drivers with secure boot (bug #18312)
FreeBSD host: compilation fixes
Installers: reduced size of packages
Web services: work with Java 11
LibreSSL compilation fix, thank you Stefan Strogin
Windows guests: fixed running applications which use complex display topologies with WDDM driver, fixed Skype for Business hangs (bug #17092)
Windows guests: fixed an occasional guest crash with WDDM driver and VBoxSVGA adapter (bug #18369)
Windows guests: shared folder file creation detection issue (bug #9276)
Linux guests: shared folder performance and reliability improvements and missing features (bugs #17360, #819)
OS/2 guests: shared folder fixes (bug #18376 and bug #18379)

New in Oracle VM VirtualBox SDK 6.0.4 Build 128413 (Jan 28, 2019)

New in Oracle VM VirtualBox SDK 6.0.2 Build 128162 (Jan 16, 2019)

New in Oracle VM VirtualBox SDK 6.0.0 Build 127566 (Dec 19, 2018)

This is a major update. The following major new features were added:
Implemented support for exporting a virtual machine to Oracle Cloud Infrastructure
User interface: greatly improved HiDPI and scaling support, including better detection and per-machine configuration
Major rework of user interface with simpler and more powerful application and virtual machine set-up
User interface: a new file manager enabling user to control the guest file system and copy files between host and guest.
Graphics: major update of 3D graphics support for Windows guests, and VMSVGA 3D graphics device emulation on Linux and Solaris guests
Added support for surround speaker setups (as used by Windows 10 Build 1809)
Added utility vboximg-mount on Apple hosts to access the content of guest disks on the host
Added support for using Hyper-V as the fallback execution core on Windows host, to avoid inability to run VMs at the price of reduced performance
In addition, the following items were fixed and/or added:
Execution core: fixed single-stepping in certain circumstances (bug #17316)
User interface: video and audio recording can now be separately enabled
Audio/Video recording fixes and improvements
Audio: better support for attaching and detaching remote desktop connections
Serial port emulation fixes
Serial ports: allow changing the serial port attachment while a machine is running (bug #6115)
Networking: Added a workaround for older guests which do not enable bus mastering for the virtio PCI device
Networking: fixed wrong RCODE from DNS AAAA query with --natdnshostresolver1 (bug #18171)
iSCSI: In cases where there is no ambiguity, the LUN of an iSCSI target is automatically determined, for targets with non-zero LUNs
Transparently resize disk images when merging if possible
VBoxManage: support for DHCP options
Fixed VNC/RDP (bug 18153)
Guest Control: various new interfaces and features (see SDK documentation)
Linux hosts: support Linux 4.20 (thank you Larry Finger)
Solaris: installer fixes
Shared folders: performance improvements
Guest Additions: improved shared folder auto-mounting
Windows Guest Additions: fix incorrect tablet co-ordinate handling with recent Windows 10 builds
Linux Additions: fix for building vboxvideo on EL 7.6 standard kernel, contributed by Robert Conde (bug #18093)
Linux guests: support Linux 4.20 (thank you Larry Finger)
Linux guests: support VMSVGA in the Linux and X11 Additions
MacOS Guest Additions: initial support
OS/2 Guest Additions: initial shared folder support
BIOS fixes
ACPI: Up to four custom ACPI tables can now be configured for a VM

New in Oracle VM VirtualBox SDK 5.2.20 Build 125813 (Oct 17, 2018)

New in Oracle VM VirtualBox SDK 5.2.18 r124319 (Aug 16, 2018)

New in Oracle VM VirtualBox SDK 5.2.16 r123759 (Jul 18, 2018)

New in Oracle VM VirtualBox SDK 5.2.14 r123301 (Jul 2, 2018)

New in Oracle VM VirtualBox SDK 5.2.12 r122591 (May 10, 2018)

New in Oracle VM VirtualBox SDK 5.2.10 r122088 (Apr 17, 2018)

New in Oracle VM VirtualBox SDK 5.2.8 r121009 (Apr 17, 2018)

New in Oracle VM VirtualBox SDK 5.2.6 r120293 (Jan 17, 2018)

New in Oracle VM VirtualBox SDK 5.2.0 r118431 (Oct 18, 2017)

This is a major update. The following major new features were added:
VM export to Oracle Cloud (OPC)
Unattended guest installation (bug #5810; see the manual for more information)
Overhauled VM selector GUI (improved tools VM / global tools handling, new icons)
Added experimental audio support for video recording
In addition, the following items were fixed and/or added:
VMM: fixed reason for recent Linux kernels on also recent CPU models warning about "XSAVE consistency problem"
GUI: Virtual Media Manager rework allowing to manage media attributes, like size, location, type and description
GUI: Host-only Network Manager implemented to simplify managing corresponding networks and their attributes
GUI: Snapshot Pane rework allowing to manage snapshot attributes, like name and description; reworked snapshot details which looks more clear, corresponds to VM Details pane and reflects current VM state difference according to last snapshot taken
GUI: Audio settings extended with possibility to enable/disable audio input/output; corresponding changed were done to Audio and Video Capture settings pages; VM Devices menu and status-bar extended with corresponding actions and indicator as well
GUI: improvements with accessibility support
GUI: Fixed double mouse cursor when using mouse integration without Guest Additions, actually a Qt 5.6 bug fixed with QT 5.6.3 (Mac OS X hosts only; bug #15610)
Audio: implemented (optional) device enumeration support for audio backends
Audio: implemented support for host device callbacks (e.g. when adding or removing an audio device)
Audio: HDA emulation now uses asynchronous data processing in separate threads
Audio: implemented ability to enable or disable audio input / output on-the-fly
Storage: implemented support for CUE/BIN images as CD/DVD media including multiple tracks
Storage: implemented support for the controller memory buffer feature for NVMe
Storage: first milestone of the I/O stack redesign landed
E1000: Fix for Windows XP freeze when booting with unplugged cable
NAT network: do not skip some port forwarding setup when multiple VMs are active (Windows hosts only; bug #17041)
Serial: fixed extremely rare misbehavior on VM poweroff
EFI: better video mode handling, supporting custom video modes and easier configuration (bug #6783)
BIOS: properly report floppy logical sectors per track for unusual formats
BIOS: update ATA disk parameter table vectors only if there is actually a corresponding ATA disk attached
PXE: speed up booting by better handling pending packets when the link is not up yet
VBoxManage: handle CPUID sub-leaf overrides better
Windows Additions: fix several 3D related crashes
Solaris hosts: allow increasing MTU size for host-only adapter to 9706 bytes to support jumbo frames
Linux Additions: on systems using systemd, make sure that only the Guest Additions timesync service is active
many unlisted fixes and improvements

New in Oracle VM VirtualBox SDK 5.1.20 r114628 (Apr 19, 2017)

New in Oracle VM VirtualBox SDK 5.1.18 r114002 (Apr 19, 2017)

New in Oracle VM VirtualBox SDK 5.1.16 r113841 (Mar 8, 2017)

New in Oracle VM VirtualBox SDK 5.1.14 r112924 (Jan 17, 2017)

New in Oracle VM VirtualBox SDK 5.1.12 r112440 (Dec 21, 2016)

New in Oracle VM VirtualBox SDK 5.1.10 r112026 (Dec 21, 2016)

New in Oracle VM VirtualBox SDK 5.1.8 r111374 (Dec 21, 2016)

GUI: fixed keyboard shortcut handling regressions (Mac OS X hosts only; bugs #15937 and #15938)
GUI: fixed keyboard handling regression for separate UI (Windows hosts only; bugs #15928)
NAT: don't exceed the maximum number of "search" suffixes. Patch from bug #15948.
NAT: fixed parsing of port-forwarding rules with a name which contains a slash (bug #16002)
NAT Network: when the host has only loopback nameserver that cannot be mapped to the guests (e.g. dnsmasq running on 127.0.1.1), make DHCP supply NAT Network DNS proxy as nameserver.
Bridged Network: prevent flooding syslog with packet allocation error messages (bug #15569)
Audio: now using Audio Queues on Mac OS X hosts
Audio: fixed recording with the PulseAudio backend (5.1 regression)
Audio: various bugfixes
Snapshots: fixed regression in 5.1.4 for deleting snapshots with several disks (bug #15831)
Snapshots: crash fix and better error reporting when snapshot deletion failed
Storage: some fixes for the NVMe emulation with Windows guests
API: fixed initialization of SAS controllers (bug #15972)
Build system: make it possible to build VBox on systems which default to Python 3
Windows hosts: detect certain cases of REGDB_E_CLASSNOTREG errors and print a helpful error message
Windows hosts: adapted to changes in Windows 10 build 14901 (bug #15944)
Windows hosts: better support for processor groups on Windows 7 and later which is required on certain hosts with many CPUs
Windows installer / Additions: added option to prevent creating of start menu items (bug #15922)
Windows Additions / VGA: if the guest's power management turns a virtual screen off, blank the corresponding VM window rather than hide the window
Windows Additions: fixed a generic bug which could lead to freezing shared folders (bug #15662)
Linux hosts / guests: fix for kernels with CONFIG_CPUMASK_OFFSTACK set (bug #16020)
Linux Additions: don't require all virtual consoles be in text mode. This should fix cases when the guest is booted with a graphical boot screen (bug #15683)
Linux Additions: added depmod overrides for the vboxguest and vboxsf kernel modules to fix conflicts with modules shipped by certain Linux distributions
X11 Additions: disable 3D on the guest if the host does not provide enough capabilities (bug #15860)

New in Oracle VM VirtualBox SDK 5.1.6 r110634 (Dec 21, 2016)

New in Oracle VM VirtualBox SDK 5.1.4 r110228 (Aug 17, 2016)

New in Oracle VM VirtualBox SDK 5.1.2 r108956 (Jul 22, 2016)

New in Oracle VM VirtualBox SDK 5.1.0 r108711 (Jul 13, 2016)

This is a major update.
THE FOLLOWING MAJOR NEW FEATURES WERE ADDED:
VMM: new APIC and I/O APIC implementations that result in significantly improved performance in certain situations
VMM: added support for Hyper-V paravirtualized debugging of Windows guests
VMM: emulate even more MMIO and shadow pagetable exits without going back to user mode
GUI: overall migration to Qt5
GUI: passive API event listener improving the VM GUI performance and response time
Audio: added HDA (High Definition Audio) support for newer Linux guests
Audio: added on-demand timers which should improve the overall performance and reduce the CPU consumption
Audio: more fine-grained volume control for the AC'97 emulation, which now also takes the master volume control into account
better support for Python 3
IN ADDITION, THE FOLLOWING ITEMS WERE FIXED AND/OR ADDED:
VMM: activate the x2APIC by default for Linux guests
VMM: many more fixes
GUI: the Detach UI action is now a part of the VM Machine menu
GUI: reworked session information window
GUI: the new VM wizard now allows to choose the VM location for the VM which is being created
GUI: fixed location of touch events in unscaled HiDPI mode
GUI: various bugfixes and internal cleanup
Storage: use fallocate() or similar if present to speed up creating fixed-sized disk images
Storage: implemented NVMHCI-compatible storage controller
Audio: various bugfixes and infrastructure improvements
E1000: implemented interrupt throttling for performance improvements
EFI: many improvements, for example allow to boot from USB
OVF: improved handling of signed manifests
API: Windows XP guests and Windows 2003 server guests now default to the E1000 T Server network card
VBoxSVC: fixed several memory leaks when handling .dmg images
Installers: ship VBoxBugReport
Windows hosts: reworked COM proxy
Linux installers: no longer rely on DKMS for module rebuilding
Linux Additions: fix a problem when updating the initramfs after the guest modules are compiled
Linux Additions: try to fix a problem where the OpenGL libraries where loaded by the X server when we only support X clients

New in Oracle VM VirtualBox SDK 5.1.0 r108607 RC 1 (Jul 8, 2016)

New in Oracle VM VirtualBox SDK 5.0.22 r108108 (Jun 17, 2016)

VMM: fixes for certain Intel Atom hosts (bug #14915)
VMM: properly restore the complete FPU state for 32-bit guests on 64-bit hosts on Intel Sandy Bridge and Ivy Bridge CPUs
VMM: new I/O-APIC implementation fixing several bugs and improving the performance under certain conditions (bug #15295 and others)
VMM: fixed a potential Linux guest panic on AMD hosts
VMM: fixed a potential hang with 32-bit EFI guests on Intel CPUs (VT-x without unrestricted guest execution)
GUI: don't allow to start subsequent separate VM instances
GUI: raised upper limit for video capture screen resolution (bug #15432)
GUI: warn if the VM has less than 128MB VRAM configured and 3D enabled
Main: when monitoring DNS configuration changes on Windows hosts avoid false positives from competing DHCP renewals. This should fix NAT link flaps when host has multiple DHCP configured interfaces, in particular when the host uses OpnVPN.
Main: properly display an error message if the VRDE server cannot be enabled at runtime, for example because another service is using the same port
NAT: Initialize guest address guess for wildcard port-forwarding rules with default guest address (bug #15412)
VGA: fix for a problem which made certain legacy guests crash under certain conditions (bug #14811)
ACPI: properly notify the guest if the ACPI battery state changed
OVF: fixed import problems for some appliances using an AHCI controller created by 3rd party applications
SDK: reduced memory usage in the webservice Java bindings
Windows hosts: fixed performance regresson with SMP guests (5.0 regression)
Windows hosts: fixes for the shared clipboard
Windows hosts: Windows hardening fix
Windows Additions: fixes to retain the guest display layout when resizing or disabling the guest monitors
Linux hosts: EL 6.8 fix (bug #15411)
Linux hosts: Linux 4.7 fix (bug #15459)
Linux Additions: Linux 4.7 fixes (bug #15444)
Linux Additions: fix for certain 32-bit guests (5.0.18 regression; bug #15320)
Linux Additions: fixed mouse pointer offset (5.0.18 regression; bug #15324)
Linux Additions: made old X.Org releases work again with kernels 3.11 and later (5.0.18 regression; bug #15319)
Linux Additions: fixed X.Org crash after hard guest reset (5.0.18 regression; bug #15354)
Linux Additions: don't stop the X11 setup if loading the shared folders module fails (5.0.18 regression)
Linux Additions: don't complain if the Drag and Drop service is not available on the host
Solaris Additions: added support for X.org 1.18

New in Oracle VM VirtualBox SDK 5.0.16 r105871 (Mar 4, 2016)

New in Oracle VM VirtualBox SDK 4.3.26 r98988 (Nov 10, 2015)

New in Oracle VM VirtualBox SDK 4.3.22 r98236 (Feb 13, 2015)

VMM: refined measurement of TSC frequency on the host, improves timekeeping for guests
VMM: decreased CPU load resulting from guest MMIO writes to the virtual APIC
VMM: fixed interception of debug exceptions, observed while using the dbx debugger on Solaris guests (VT-x only)
GUI: 3D overlay window positioning code improved, fixed potential misplacement of 3D accelerated guest graphics content
GUI: fixed accident SSL authentication failures during update check on Windows hosts
GUI: never send the "ACPI power" keyboard scancode to the guest, we have the ACPI power button for that
GUI: was unable to properly restore seamless mode VM from snapshot/saved-state under some circumstances
VBoxHeadless: don't crash if 3D is enabled in the VM settings
ATA: fixed several passthrough issues
Audio: fixed DirectSound failure when the the host has no audio input device (Windows hosts only)
SB16: fixed compatibility issue
Storage: fixed broken CD/DVD passthrough when using the IDE controller
NAT: new ping proxy for Windows hosts
NAT: Properly report outbound connect(2) failures to guest with TCP RST or ICMP
NAT Network: no need for frequent wakeups in VBoxNetDHCP and VBoxNetNAT
Host-only adapter: prevent Windows from creating an "Unidentified network"
Bridged Networking: don't leak host-to-guest traffic to the wireless network when bridging to a wireless interface
Main: fixed a possible race when changing the medium leading to a deadlock under rare conditions
VBoxManage: fixed return code if starting a VM failed
API: fixed 2 deadlock opportunities related to medium handling (bugs #13789, #13801, thank you Alexander Urakov)
API: fixed bug in XPCOM which created too few worker threads, sporadically resulting in a deadlock
SDK: fixed a garbage collection leak in the Python VirtualBox webservice API binding
Linux hosts: fixes for activated SMAP (
X11 guests: prevent unwanted hiding of guest screens on multi-monitor guests
X11 guests: added support for X.Org Server 1.17
X11 Additions: fixed a memory leak in VBoxService if libdbus is available but dbus-daemon isn't running
Windows Additions: prevent VBox WDDM driver from loading if host reports weak OpenGL capabilities. 3D content now can be shown over Remote Desktop connection.
Winodws Additions: some fixes for recent Windows 10 Previews
Linux Additions: fixed a compatibility issue with 64-bit Linux 2.4 kernels
Linux Additions: fixed a potential use-after-free when unloading the VBoxGuest module
Linux Additions: Linux 3.19 fixes

New in Oracle VM VirtualBox SDK 4.3.20 r96996 (Feb 13, 2015)

VMM: fixed reboot hang of 32-bit Windows SMP guests
VMM: proper Math Fault handling with certain legacy guests
VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT on older CPUs that don't support MSR-bitmaps
GUI: fix 3D overlay window re-parenting issue when VM goes to full screen mode on X11 hosts.
GUI: fix occasional loss of focus in full-screen mode on X11 host systems (4.3.16 regression)
GUI: Mac OS X: wizards should have Cancel button
GUI: added a global option to prevent automatic raising of the new window by mouse move with multi-screen guests
API: accept remote display port 0 as the default RDP port
VBoxManage: fixed crash when executing showvminfo command under certain circumstances
ACPI: fixed occasional Guru Meditations in ACPI timer code (4.3.18 regression)
EFI: improved performance of IDE disk access
EFI: fixed a bug in the EFI video driver which prevented Windows to boot in UEFI mode
EFI: properly announce the amount of RAM for big VMs
Storage: fixed a crash under certain circumstances when a medium was ejected from a drive attached to the SATA controller without inserting a new medium before pausing or closing the VM (4.3.16 regression)
Storage: fixed an interrupt acknowledge issue causing hanging guests or slower I/O (4.3.18 regression)
Storage: fixed broken resume after the VM was suspended due to a full disk if host I/O caching is used
Storage: fixed a Guru Meditation under certain conditions when using the DevLsiLogic controller with VMs running in raw mode
Guest Control: fixed a bug which might lead to a crash during recursive copy
SDK: Java COM bindings fixes
iPXE: enable the HTTP download protocol
Runtime: do not use a fixed stack size creating temporary threads during initialization
Windows hosts: fixed more startup problems on certain Windows hosts due to conflicts with anti-virus software; better error reporting
Windows hosts: fixed DirectSound host audio failure under certain conditions
Windows hosts: fixed additional cases of 4.3.14 regression whereby AltGr stopped working for some people
Windows Additions: preserve guest monitor layout when resizing Windows 7 or newer guests
Linux Additions: Linux 3.18 compile fixes

New in Oracle VM VirtualBox SDK 4.3.18 r96516 (Feb 13, 2015)

New in Oracle VM VirtualBox SDK 4.3.16 r95972 (Feb 13, 2015)

New in Oracle VM VirtualBox SDK 4.3.14 r95030 (Jul 16, 2014)

New in Oracle VM VirtualBox SDK 4.3.14 r94870 RC (Jul 10, 2014)

New in Oracle VM VirtualBox SDK 4.3.12 r93733 (May 17, 2014)

New in Oracle VM VirtualBox SDK 4.3.10 r93012 (Mar 27, 2014)

New in Oracle VM VirtualBox SDK 4.3.10 r92957 (Mar 26, 2014)

New in Oracle VM VirtualBox SDK 4.3.8 r92456 (Feb 26, 2014)

This is a maintenance release. The following items were fixed and/or added:
VMM: more work on improving the emulation of certain MSR registers (e.g. bugs #12224, #12544)
VMM: fixed a VERR_INVALID_RPL Guru Meditation when booting certain guests (bug #11350)
VMM: experimental support for SSE 4.1 / SSE 4.2 passthrough, see here how to enable it (bug #8651)
GUI: experimental HID LEDs synchronization for Windows hosts, see here
GUI: warn the user if the Oracle Extension Pack is not installed and the user tries to activate the remote display feature (bug #9104)
GUI: make sure that a minimized guest (using mini toolbar in fullscreen/seamless mode) keeps the minimized state (bug #12199)
GUI: popup banner’s “do not show this message again” check-box replaced with corre- sponding button
GUI: network adapter cables can now be connected/disconnected directly through the run- ning virtual machine Devices / Network menu a Network status-bar indicator
GUI: the new VM wizard now proposes 64-bit guests on 64-bit hosts by default; better distinction between 32-bit OS types 64-bit OS types (bug #12533)
GUI: better error message if appliance import fails (bug #12657)
GUI: allow to set host-combination to ’None’ using the Global settings / Input page (bug #12730)
GUI: don’t switch the guest to a black screen during online snapshot merge (4.3 regression)
VBoxManage: when exporting an appliance, support the suppression of MAC addresses, which means they will be always recreated on import, avoiding duplicate MAC addresses for VMs which are imported several times
AHCI: fixed a VM hang during suspend under certain circumstances
AHCI: fixed a VM hang during online snapshot merge under certain circumstances
AHCI: fixed a bug which resulted in Windows XP guest hangs if a SATA CDROM is attached (bug #12417)
AHCI: fixed a Guru Meditation under certain conditions
AHCI: ejecting a CD/DVD medium failed under certain conditions
AHCI: disk hotplugging fixes
NAT: transparent handling of host sleep/resume and network configuration changes if the dnsproxy is enabled or if the hostresolver is used (bug #12441)
NAT: fixed crash and misbehaviour under some circumstances with ICMP packets having TTL=1
NAT Network: fixed IPv6 reassembly
NAT Network: ping proxy implemented
OVF: fixed reading of the OVF 0.9 section element (4.3 regression; bug #12345)
OVF: several fixes
3D: several fixes, multiscreen fixes (e.g. bug #9124)
3D: include 3D content in captured videos (bug #12666)
3D: include 3D content in captured screenshot (bug #11758)
VGA: proper handling of legacy graphics modes if the Guest Additions are active (bug #6649)
USB: fixed crash during isochronous transfer under rare circumstances
BIOS: better disk geometry handling of SCSI drives
API: fix crashes in Java API clients using the XPCOM binding, happened with output pa- rameters only (bug #11232)
VBoxSVC: documented the handling of host power management events (see here) and added an extradata item for configuring the handling of the battery-low event (bug #9925)
VBoxSVC: fixed a bug which could trigger a crash if a VM snapshot was restored the second time and the VM has associated bandwidth groups (bug #12569)
VBoxSVC: properly detect ifconfig if located in /bin (bug #12713)
Shared Folders: fixed a failure to restore transient shared folders when starting a VM from a saved state (bug #12578)
Windows hosts: fixes for non-ANSI code page user names and similar environment contents (bug #12596)
Windows hosts / guests: fixed setting and using a guest user’s process environment vari- ables (relevant for Guest Control)
Windows Additions: fixed handle leaks in VBoxTray (bug #12563)
Windows Additions: fixed a crash while detecting active guest users
Windows Additions: fixed restoring backed up D3D files on XPDM -> WDDM upgrade
Guest Control: fixed setting and using a guest user’s process environment variables

New in Oracle VM VirtualBox SDK 4.3.6 r91406 (Feb 26, 2014)

New in Oracle VM VirtualBox SDK 4.3.4 r91017 (Nov 29, 2013)

VMM: fix for a bug in the Local APIC emulation causing a BSOD when booting certain
guests (4.3.0 regression)
VMM: fixed loading of saved states if VT-x/AMD-V was disabled (4.3.2 regression)
VMM: fixed single-stepping inside the guest for certain instructions (VT-x only)
VMM: fixed a performance issue involving APIC accesses after rebooting a VM (4.3.0 re-gression; VT-x only)
VMM: fixed TPR patching to be enabled for 32-bit guests even when the chosen guest type is 64-bit (4.3.0 regression; AMD-V only)
VMM: fixed occassional VINF_EM_TRIPLE_FAULT errors on hosts without the unrestricted guest execution feature
GUI: don’t bother the user with the BPP warning if no Guest Additions are installed
GUI: fixed machine-window paint artifacts on VM reboot / guest-screen resize
GUI: make sure the assigned license and description are attached to the exported appliance
GUI: fixed bugs in close VM action restrictions handling
GUI: fixed incorrect wizards text colors for some unusual look and feel styles
GUI: should restore seamless mode as soon as possible after VM reboot or shutdown
GUI: fixes for medium enumeration
Host-only Networking: fixed creating of host-only network interfaces (4.3.0 regression)
NAT: don’t run into an infinite loop in case the host cannot access any DNS server (4.3.0 regression)
NAT: don’t re-connect the cable if the DNS information changes and the cable was disconnected before (4.3.0 regression)
NAT: fixed several issues with automatically starting / terminating of NAT networks on VM start / stop and configuration changes VBoxNetDHCP: don’t block prevent VBoxSVC from terminating
2D Video acceleration: fix crashes on presentation mode switches
BusLogic: allow to run VMs with more than one BusLogic SCSI controller enabled
Keyboard: fixed a VM crash if a VM was resumed from a saved state where at least one key was pressed
VBoxSVC: fixed a heap corruption under certain conditions (4.3.0 regression)
VBoxSVC: fixed a race leading to a hang during initialization
OVF: fixed import logic for OVF appliances containing multiple VMs
OVF: improved logic for finding an appropriate image format during OVF import
API: block the removal of the current snapshot if it has child snapshots (only relevant for VMs without snapshottable hard disks, their presence always prevented removal), which resulted in VM config corruption
API: mark VM configs with snapshots but without current snapshot as inaccessible, as this combination is nonsense
API: fixed information for some automatically generated events (only with XPCOM, Windows host was not affected), which caused errors when getting some of the attributes over the webservice
SDK: extended the functionality coverage for the C bindings
Guest Control: various bugfixes and improved VBoxManage help
Windows hosts: another attempt to fix the massive DPC latency
Windows host installer: make registering file extensions optional, contributed by Tal Aloni
Guest Additions/3D: fixed an occasional dead-lock
Windows Additions/3D: fixed possible memory leaking
Windows Additions/XPDM: use separate tables containing valid video modes for each virtual monitor
Windows Additions: fixed automatic logins for Vista and newer Windows guests

New in Oracle VM VirtualBox SDK 4.3.2 r90405 (Nov 2, 2013)

New in Oracle VM VirtualBox SDK 4.3.0 r89960 (Oct 15, 2013)

The following major new features were added:
VMM: major rewrite of the VT-x code and the AMD-V code including many bug fixes and performance improvements (for example bug #9659)
VMM: introduced a lightweight instruction interpreter for situations not handled by hardware virtualization
GUI: extended messaging mechanism (new non-modal popup overlays used to show non-critical warnings and provide user with additional information)
GUI: keyboard shortcuts management (input page of global preferences extended with possibility to edit general keyboard shortcuts for VirtualBox Manager and Virtual Machine)
GUI: video capturing support (bug #4766)
Added USB touch device emulation
Added experimental support for webcam passthrough complementing USB passthrough (see the manual for more information)
Added SCSI CD-ROM emulation, including boot support
VRDP: support for IPv6
Guest Control: guest sessions now are running in dedicated, impersonated session processes (needs at least Guest Additions 4.3 installed)
Guest Control: implemented IGuestFile support
NAT: experimental virtual router mode: several VMs are attached to the same internal network and share one NAT service (see the manual for more information)
In addition, the following items were fixed and/or added:
VMM: significantly improved performance of NetWare 5.x/6.x guests on host systems without nested paging support
VMM: fixed losing host NMIs while in VT-x guest-context
VMM: changed order of actions in emulated task switch (bug #10532)
VMM: allow to activate VT-x while in SMX mode and provide more information if that is not possible
GUI: update check uses https
GUI: numerous minor internal cleanups and bug fixes
GUI, VBoxManage: when unregistering a VM, also unregister the hard disk images which are used exclusively (bug #10311)
GUI: use the number of physical presented processor cores instead of the number of logical processor cores to check if the users assigned too many virtual CPUs to the guest
Snapshots: made live snapshots work again (bug #9255)
Teleportation: made it work again (bug #9455)
Storage: implemented AHA-154x compatibility mode in the emulated BusLogic SCSI HBA
Storage: significantly improved performance of large ATAPI PIO transfers (BeOS, Minix 3 guests affected)
Storage: added floppy formatting emulation (NB: cannot be used to change existing media geometry)
Settings: global and per-VM default frontend configuration, useful to select the use of alternative VM frontends
Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes
Settings: the per-VM hwvirtextexcl setting has been replaced by a global hwvirtexclusive property
Main: new event queue implementation which does not use the host's native event queue for processing VirtualBox events anymore
Main: eliminate the use of SysV semaphores on all host OSes other than Windows, namely Linux, Solaris and Mac OS X, with the consequence that no system reconfiguration is needed to run more than approximately 100 VMs
Main: use the XDG standard configuration folder instead of .VirtualBox on systems where it is appropriate (bug #5099)
Main: extension pack framework can now support loading HGCM modules, contributed by Jeff Westphal
VBoxManage: list more information about hard disk/DVD/floppy media, and support the --long option to show really all available details
VBoxManage: added support for optional command line parameters for the automatic Guest Additions update
VBoxManage: added support for listing active guest sessions, guest processes and/or guest files via guestcontrol list
VBoxManage: added support for closing active guest sessions via guestcontrol session close --session-id | --session-name | --all
VBoxManage: added support for terminating active guest processes via guestcontrol process kill|close|terminate --session-id | --session-name ... or guestcontrol [p[s]]kill --session-id | --session-name ...
VBoxManage: added support for watching guest sessions via guestcontrol watch
VBoxManage: added modifyvm --triplefaultreset to make the VM reset on triple fault instead of triggering a Guru Meditation (see the manual for more information)
3D support: several fixes
OVF: several fixes
Extpack Installer: make it work if the file is located in a folder with special characters
Keyboard: fix for reporting key sequences like Ctrl+Alt+Del for the USB keyboard emulation
Shared Clipboard/X11: support for BMP-format images, contributed by François Revol
Windows hosts: don't cause massive DPC latency (only on certain hosts; still needs improving; bug #6242)
Windows hosts: consider symlinks when retrieving volume information (bug #11962)
Windows hosts: fixed an issue with USB2 devices being inaccessible when plugged into USB 3.0 ports
Windows Additions: fixed misbehavior with guest display power management (WDDM driver only; bug #11170)
Windows Additions: fixed memory leak caused by WTSQuerySessionInformation() on Windows 2000 guests (bug #12072)
Windows Additions: ability to track guest user idle times through the newly introduced event IGuestUserStateChangedEvent

New in Oracle VM VirtualBox SDK 4.3.0 r89194 Beta 3 (Sep 21, 2013)

VMM: major rewrite of the VT-x code and the AMD-V code including many bug fixes and performance improvements
GUI: extended messaging mechanism (new non-modal popup overlays used to show noncritical warnings and provide user with additional information)
GUI: keyboard shortcuts management (input page of global preferences extended with
possibility to edit general keyboard shortcuts for VirtualBox Manager and Virtual Machine)
GUI: video capturing support
Added USB touch device emulation
Added SCSI CD-ROM emulation, including boot support
VRDP: support for IPv6
Guest Control: guest sessions now are running in dedicated, impersonated session processes needs at least Guest Additions 4.3 installed)
Guest Control: implemented IGuestFile support
NAT: experimental virtual router mode: several VMs are attached to the same internal
network and share one NAT service (see chapter 6.4, Network Address Translation Service experimental), page 95)
In addition, the following items were fixed and/or added:
VMM: properly handle NMIs on Linux hosts with X2APIC enabled
VMM: significantly improved performance of NetWare 5.x/6.x guests on host systems without nested paging support
VMM: fixed losing host NMIs while in VT-x guest-context
VMM: changed order of actions in emulated task switch
GUI: update check uses https
GUI: numerous minor internal cleanups and bug fixes
GUI, VBoxManage: when unregistering a VM, also unregister the hard disk images which are used exclusively
Snapshots: made live snapshots work again
Teleportation: made it work again
Storage: implemented AHA-154x compatibility mode in the emulated BusLogic SCSI HBA
Storage: significantly improved performance of large ATAPI PIO transfers (BeOS, Minix 3 guests affected)
Storage: added floppy formatting emulation (NB: cannot be used to change existing media geometry)
Settings: global and per-VM default frontend configuration, useful to select the use of
alternative VM frontends
Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes
Settings: the per-VM hwvirtextexcl setting has been replaced by a global hwvirtexclusive property
Main: new event queue implementation which does not use the host’s native event queue for processing VirtualBox events anymore
Main: eliminate the use of SysV semaphores on all host OSes other than Windows, namely Linux, Solaris and Mac OS X, with the consequence that no system reconfiguration is needed to run more than approximately 100 VMs
Main: use the XDG standard configuration folder instead of .VirtualBox on systems where it is appropriate
Main: extension pack framework can now support loading HGCM modules, contributed by Jeff Westphal
VBoxManage: list more information about hard disk/DVD/floppy media, and support the
long option to show really all available details
VBoxManage: added support for optional command line parameters for the automatic
Guest Additions update
VBoxManage: added support for listing active guest sessions, guest processes and/or guest files via guestcontrol list
VBoxManage: added support for closing active guest sessions via guestcontrol session
close --session-id | --session-name |--all
VBoxManage: added support for terminating active guest processes via guestcontrol
process kill|close|terminate --session-id | --session-name ... or guestcontrol [p[s]]kill --session-id | session-name ...
VBoxManage: added support for watching guest sessions via guestcontrol watch
3D support: several fixes
3D support: several fixes for Mac OS X hosts
OVF: several fixes
Keyboard: fix for reporting key sequences like Ctrl+Alt+Del for the USB keyboard emulation
Shared Clipboard/X11: support for BMP-format images, contributed by François Revol
Windows hosts: don’t cause massive DPC latency (only on certain hosts; still needs improving)
Windows hosts: consider symlinks when retrieving volume information
Windows hosts: fixed an issue with USB2 devices being inaccessible when plugged into
USB 3.0 ports
Windows Additions: fixed misbehavior with guest display power management (WDDM
driver only)
Linux Additions: fixed udev detection in the init script with Linux 3.x kernels
Windows guests: ability to track guest user idle times through the newly introduced event IGuestUserStateChangedEvent

New in Oracle VM VirtualBox SDK 4.2.18 r88780 (Sep 21, 2013)

New in Oracle VM VirtualBox SDK 4.3.0 r88249 Beta 1 (Aug 21, 2013)

The following major new features were added:
VMM: major rewrite of the VT-x code including many bug fixes and performance improvements
GUI: keyboard shortcuts management (input page of global preferences extended with
possibility to edit general keyboard shortcuts for VirtualBox Manager and Virtual Machine)
GUI: extended messaging mechanism (new non-modal popup overlays used to show noncritical warnings and provide user with additional information)
GUI: video capturing support
GUI: host touch devices support (GUI passes host touch-events to guest)
Emulated USB touch devices
VRDP: support for IPv6
NAT: experimental virtual router mode: several VMs are attached to the same internal
network and share one NAT service (see chapter 6.4, Network Address Translation Service
In addition, the following items were fixed and/or added:
VMM: properly handle NMIs on Linux hosts with X2APIC enabled
GUI: update check uses https
GUI: lot of internal stuff rewritten (cleanup and bug-fixes)
Settings: global and per-VM default frontend configuration, useful to select the use of
alternative VM frontends
Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes
Main: new event queue implementation which does not use the host’s native event queue for processing VirtualBox events anymore
Main: use the XDG standard configuration folder instead of .VirtualBox on systems where it is appropriate
VBoxManage: list more information about hard disk/DVD/floppy media, and support the
--long option to show really all available details
VBoxManage: added support for optional command line parameters for the automatic
Guest Additions update:
VBoxManage: added support for listing active guest sessions, guest processes and/or guest
files via guestcontrol list
VBoxManage: added support for closing active guest sessions via guestcontrol session
close --session-id | --session-name |--all
VBoxManage: added support for terminating active guest processes via guestcontrol
process kill|close|terminate --session-id | --session-name ... or guestcontrol [p[s]]kill --session-id |
--session-name ...
VBoxManage: added support for watching guest sessions via guestcontrol watch
3D support: several fixes
3D support: several fixes for Mac OS X hosts
OVF: several fixes
Keyboard: fix for reporting key sequences like Ctrl+Alt+Del for the USB keyboard emulation
Shared Clipboard/X11: support for BMP-format images, contributed by François Revol
Windows hosts: don’t cause massive DPC latency
Windows hosts: consider symlinks when retrieving volume information
Windows Additions: fixed misbehavior with guest display power management (WDDM
driver only; bug #11170)
Windows guests: ability to track guest user idle times through the newly introduced event IGuestUserStateChangedEvent

New in Oracle VM VirtualBox SDK 4.2.16 r86992 (Jul 5, 2013)

New in Oracle VM VirtualBox SDK 4.2.14 r86644 (Jun 22, 2013)

VMM: another TLB invalidation fix for non-present pages
VMM: fixed a performance regression (4.2.8 regression; bug #11674)
GUI: fixed a crash on shutdown
GUI: prevent stuck keys under certain conditions on Windows hosts (bugs #2613, #6171)
VRDP: fixed a rare crash on the guest screen resize
VRDP: allow to change VRDP parameters (including enabling/disabling the server) if the VM is paused
USB: fixed passing through devices on Mac OS X host to a VM with 2 or more virtual CPUs (bug #7462)
USB: fixed hang during isochronous transfer with certain devices (4.1 regression; Windows hosts only; bug #11839)
USB: properly handle orphaned URBs (bug #11207)
BIOS: fixed function for returning the PCI interrupt routing table (fixes NetWare 6.x guests)
BIOS: don't use the ENTER / LEAVE instructions in the BIOS as these don't work in the real mode as set up by certain guests (e.g. Plan 9 and QNX 4)
DMI: allow to configure DmiChassisType (bug #11832)
Storage: fixed lost writes if iSCSI is used with snapshots and asynchronous I/O (bug #11479)
Storage: fixed accessing certain VHDX images created by Windows 8 (bug #11502)
Storage: fixed hang when creating a snapshot using Parallels disk images (bug #9617)
3D: seamless + 3D fixes (bug #11723)
3D: version 4.2.12 was not able to read saved states of older versions under certain conditions (bug #11718)
Main/Properties: don't create a guest property for non-running VMs if the property does not exist and is about to be removed (bug #11765)
Main/Properties: don't forget to make new guest properties persistent after the VM was terminated (bug #11719)
Main/Display: don't lose seamless regions during screen resize
Main/OVF: don't crash during import if the client forgot to call Appliance::interpret() (bug #10845)
Main/OVF: don't create invalid appliances by stripping the file name if the VM name is very long (bug #11814)
Main/OVF: don't fail if the appliance contains multiple file references (bug #10689)
Main/Metrics: fixed Solaris file descriptor leak
Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes
VBoxManage: fixed setting the parent UUID on diff images using sethdparentuuid
Linux hosts: work around for not crashing as a result of automatic NUMA balancing which was introduced in Linux 3.8 (bug #11610)
Windows installer: force the installation of the public certificate in background (i.e. completely prevent user interaction) if the --silent command line option is specified
Windows Additions: fixed problems with partial install in the unattended case
Windows Additions: fixed display glitch with the Start button in seamless mode for some themes
Windows Additions: Seamless mode and auto-resize fixes
Windows Additions: fixed trying to to retrieve new auto-logon credentials if current ones were not processed yet
Windows Additions installer: added the /with_wddm switch to select the experimental WDDM driver by default
Linux Additions: fixed setting own timed out and aborted texts in information label of the lightdm greeter
Linux Additions: fixed compilation against Linux 3.2.0 Ubuntu kernels (4.2.12 regression as a side effect of the Debian kernel build fix; bug #11709)
X11 Additions: reduced the CPU load of VBoxClient in drag'and'drop mode
OS/2 Additions: made the mouse wheel work (bug #6793)
Guest Additions: fixed problems copying and pasting between two guests on an X11 host (bug #11792)

New in Oracle VM VirtualBox SDK 4.2.12 r84980 (Apr 12, 2013)

New in Oracle VM VirtualBox SDK 4.2.10 r84104 (Mar 15, 2013)

New in Oracle VM VirtualBox SDK 4.2.8 r83876 (Feb 28, 2013)

New in Oracle VM VirtualBox SDK 4.2.6 r82870 (Dec 19, 2012)

This is a maintenance release. The following items were fixed and/or added:
VMM: don’t inject stale VT-x events to prevent crashes after VM reset (bug #11256)
VMM: workaround for buggy BIOSes which enable MONITOR only for certain CPUs (bug #9460)
GUI: fixed trimming of anti-aliased text in details-view element headers (4.2.0 regression)
GUI: fixed create-settings-file-alias functionality on Mac hosts (4.2.0 regression)
GUI: fixed take-guest-screenshot functionality on Windows hosts (bug #11095)
GUI: several minor fixes, including palette fixes (bug #11191)
GUI: fixed Windows 2012 OS type (bug #11206)
GUI: allow to terminate the VM even if VBoxSVC crashed
API: fixed cancelling of snapshots, previously this could lead to inconsistent VM configs (bug #6877)
API: fixed identifying disk images by UUID (bug #11209)
3D Support: several fixes
VRDP: fixed occasional crash with external authentication (bug #11156)
VGA: fix for double scan text modes
USB: fixed invalid pending request count at the time of service of DEVICE POWER requests (Windows hosts only; bugs #10021, #11056)
USB keyboard: Korean keyboard workaround (bug #11150)
Storage: fixed hang with QCOW images and asynchronous I/O enabled
Storage: fixed hang with newer VHD images (bug #11279)
Storage: actually write the non-rotational flag to the VM settings (4.2.0 regression)
Virtio-net: fixed the problem with network statistics counters in Session Information dialog (GUI)
Metrics: introduced network rate and disk usage metrics
Metrics: fixed a crash under certain conditions on Solaris hosts
BIOS: fix for El Torito
Shared Folders: if the host folder of a shared folder mapping does not exist, keep it active but mark it as invalid to prevent inconsitent saved states (bug #11147)
VBoxManage: fixed converting disks from raw images
VBoxManage: show snapshot description in the VM or snapshot information
VBoxManage: make implicit opening of media consistent in all places dealing with media
VBoxManage: the iSCSI initiator name was not stored in the settings file when doing storageattach (bug #11212)
VBoxManage: metrics collect now properly handles ’CPU/MHz’ and ’Net/*/LinkSpeed’ metrics
VBoxManage: changing the image UUID or parent UUID as part of storageattach works now in all safe cases
VBoxManage: introduced storageattach –medium additions as a shortcut to mount the ad- ditions image (bug #11165)
OVF: fixed importing OVF files cerated by recent VMware products (bug #10905)
Windows host installer: integrated user-contributed translations, thanks to all contributors!
Windows Additions: fixed auto-logon installation for Windows 8
Windows Additions: don’t fail if the shared folders host service is not available
Windows Additions: fixed Guest Additions startup on Windows 2000 guests (bug #11253)
Windows Additions: auto-resize fixes for Windows 8 guests

New in Oracle VM VirtualBox SDK 4.2.2 r81494 (Oct 19, 2012)

GUI: restored VM item tool-tip functionality (4.2 regression)
GUI: added group item tool-tip functionality
GUI: fixed handling of the .ova/.ovf file name association (4.2 regression)
GUI: it was not possible to change any setting before the first VM was created (bug #10928)
GUI: disable grouping action if all the selected items are full children list of the same group already
GUI: added menu for runtime drag-and-drop option change
GUI: cleanup shared-clipboard menu on visual-mode change
GUI: make sure VM receives keyboard focus on entering fullscreen-mode on Win host (bug #11051)
GUI: disable proxy authentication for security reasons
3D Support: DrawIndexedPrimitiveUP implementation fixes for the Windows WDDM video driver (bug #10929)
Storage: fixed a release assertion in the AHCI emulation when requests where canceled with asynchronous I/O disabled
Storage: fixed a hang during VM reset under certain circumstances (bug #10898)
NAT: fixed a crash under rare circumstances (Windows hosts only; bug #10128)
NAT: automatically use the host resolver if the host name server is set to some unusual loopback value (bug #10864)
E1000: fixed a VirtualBox crash during intensive network transfers (4.2 regression; bugs #10936, #10969, #10980)
ICH9: fixed PCI bridge initialization
USB mouse: ensure that the last mouse event doesn't get lost if no URBs are available
BIOS: certain legacy guests (e.g. Windows 95) didn't find the boot device after a warm reboot
BIOS: don't trash the palette in text modes when setting the border color
EFI: fixed OS X guest autoboot (4.2 regression)
VBoxManage: fixed output of showvminfo --machinereadable (bug #10973)
VBoxManage: fixed parsing of storageattach --discard (bug #11023)
VBoxManage: fixed wrong output of the HPET setting in showvminfo (bug #11065)
VBoxManage: fixed closing the guest session after executing a guest process via guest control
VBoxShell: adaptions to interface name changes
Guest Additions device: fixed a Guest Additions hang when a machine was reset after a crash
Linux hosts / guests: Linux 3.7-rc1 fixes
Linux Additions: support X.Org Server 1.13
Linux Additions: fixed a hang when the X server was restarted with old guest kernels
Linux Additions: fixed a VBoxService crash during CPU hot remove (bug #10964)
Windows Additions: fixed automatic screen resize issue for NT4 guests
OS/2 Additions: fixed shutdown hang
OS/2 Additions: fixed mouse driver panic
Solaris hosts: fixed autostart service going into maintenance mode after all VMs started
Solaris hosts: fixed linking the host driver with the dtrace module

New in Oracle VM VirtualBox SDK 4.2.0 r80737 (Sep 13, 2012)

Improved Windows 8 support, in particular many 3D-related fixes:
GUI: VM groups
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards, in combination with an ICH9 chipset configuration
Resource control: added support for limiting network IO bandwidth; see chapter 6.9, Limiting bandwidth for network I/O, page 96
Added possibility to start VMs during system boot on Linux, OS X and Solaris; see chapter 9.24, Starting virtual machines during system boot
Added experimental support for Drag’n’drop from the host to Linux guests. Support for more guests and for guest-to-host is planned.
Added support for parallel port passthrough on Windows hosts
Enhanced API for controlling the guest; please see the SDK reference and API documentation for more information
In addition, the following items were fixed and/or added:
Mac OS X hosts: sign application and installer to avoid warnings on Mountain Lion
VMM: fixed a potential host crash triggered by shutting down a VM when another VM was running (only affected 32-bit hosts and 64-bit OS X hosts, 4.1 regression)
VMM: fixed a potential host crash under a high guest memory pressure (seen withWindows 8 guests)
VMM: improved VM context switch performance for Intel CPUs using nested paging
VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9)
VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests e.g. old OS/2 releases)
VMM: support recent VIA CPUs
VMM: fixed handling of task gates if VT-x/AMD-V is disabled
VMM: page fusion fixes
GUI: network operations manager
GUI: allow taking screenshots of the current VM window content
GUI: allow automatically sorting of the VM list
GUI: allow starting of headless VMs from the GUI
GUI: allow reset, shutdown and poweroff from the Manager window
GUI: allow to globally limit the maximum screen resolution for guests
GUI: show the full medium part on hovering the list of recently used ISO images
GUI: do not create additional folders when a new machine has a separator character in its name
GUI: don’t crash on terminate if the settings dialog is still open
GUI: consider scaled DPI values when display fonts on Windows hosts
GUI: if a bridged network interface cannot be found, don’t refuse to start the VM but allow the user to change the setting immediately (bug )
Snapshots: fixed a crash when restoring an old snapshot when powering off a VM
Clipboard: disable the clipboard by default for new VMs (see chapter 13.3.2.3, Clipboard, page 206). It can be enabled at any time using the VM menu.
Settings: sanitise the name of VM folders and settings file
Settings: allow to store the iSCSI initiator secret encrypted
NAT: improvements for the built-in TFTP server
NAT: fixed memory leak when disabling the NAT engine
E1000: 802.1q VLAN support
Storage: implemented burning of audio CDs in passthrough mode
Storage: fixed audio CD passthrough for certain media players
Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
Storage: added support for QED images
Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
Storage: added readonly support for VHDX images
USB: don’t crash if a USB device is plugged or unplugged when saving or loading the VM state (SMP guests only)
Solaris additions: added support for X.org Server 1.11 and 1.12
Solaris additions: switched to using an in-kernel mouse driver
Windows hosts: no need to recreate host-only adapters after a VirtualBox update
Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options
Windows Additions: fixed memory leak in VBoxTray

New in Oracle VM VirtualBox SDK 4.2.0 r80667 RC4 (Sep 10, 2012)

Improved Windows 8 support, in particular many 3D-related fixes
GUI: VM groups
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards, in combination with an ICH9 chipset configuration
Resource control: added support for limiting network IO bandwidth; see chapter 6.9, Limiting bandwidth for network I/O, page 96
Added possibility to start VMs during system boot on Linux, OS X and Solaris; Starting virtual machines during system boot
Added experimental support for Drag’n’drop from the host to Linux guests. Support for more guests and for guest-to-host is planned
Added support for parallel port passthrough on Windows hosts
Enhanced API for controlling the guest; please see the SDK reference and API documentation for more information
In addition, the following items were fixed and/or added:
VMM: fixed a potential host crash triggered by shutting down a VM when another VM was running (only affected 32-bit hosts and 64-bit OS X hosts, 4.1 regression)
VMM: fixed a potential host crash under a high guest memory pressure (seen withWindows 8 guests)
VMM: improved VM context switch performance for Intel CPUs using nested paging
VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9)
VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests (e.g. old OS/2 releases)
VMM: support recent VIA CPUs
VMM: fixed handling of task gates if VT-x/AMD-V is disabled
GUI: network operations manager
GUI: allow taking screenshots of the current VM window content
GUI: allow automatically sorting of the VM list
GUI: allow starting of headless VMs from the GUI
GUI: allow reset, shutdown and poweroff from the Manager window
GUI: allow to globally limit the maximum screen resolution for guests
GUI: show the full medium part on hovering the list of recently used ISO images
GUI: do not create additional folders when a new machine has a separator character in its name
GUI: don’t crash on terminate if the settings dialog is still open
GUI: consider scaled DPI values when display fonts on Windows hosts
GUI: if a bridged network interface cannot be found, don’t refuse to start the VM but allow the user to change the setting immediately (bug )
Snapshots: fixed a crash when restoring an old snapshot when powering off a VM
Clipboard: disable the clipboard by default for new VMs (see chapter 13.3.2.3, Clipboard, page 206). It can be enabled at any time using the VM menu.
Settings: sanitise the name of VM folders and settings file
Settings: allow to store the iSCSI initiator secret encrypted
NAT: improvements for the built-in TFTP server
E1000: 802.1q VLAN support (bug #10429)
Storage: implemented burning of audio CDs in passthrough mode
Storage: fixed audio CD passthrough for certain media players
Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
Storage: added support for QED images
Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
Storage: added readonly support for VHDX images
USB: don’t crash if a USB device is plugged or unplugged when saving or loading the VM state (SMP guests only)
Solaris additions: added support for X.org Server 1.11 and 1.12
Solaris additions: switched to using an in-kernel mouse driver
Windows hosts: no need to recreate host-only adapters after a VirtualBox update
Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options
Windows Additions: fixed memory leak in VBoxTray

New in Oracle VM VirtualBox SDK 4.2.0 r80444 RC3 (Aug 30, 2012)

Improved Windows 8 support, in particular many 3D-related fixes
GUI: VM groups
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards, in combination with an ICH9 chipset configuration
Resource control: added support for limiting network IO bandwidth; see chapter 6.9, Limiting bandwidth for network I/O, page 96
Added possibility to start VMs during system boot on Linux, OS X and Solaris; see chapter 9.24, Starting virtual machines during system boot
Added experimental support for Drag’n’drop from the host to Linux guests. Support for more guests and for guest-to-host is planned
Added support for parallel port passthrough on Windows hosts
Enhanced API for controlling the guest; please see the SDK reference and API documentation for more information
In addition, the following items were fixed and/or added:
Mac OS X hosts: sign application and installer to avoid warnings on Mountain Lion
VMM: improved VM context switch performance for Intel CPUs using nested paging
VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9)
VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests e.g. old OS/2 releases)
VMM: support recent VIA CPUs
VMM: fixed handling of task gates if VT-x/AMD-V is disabled
GUI: network operations manager
GUI: allow taking screenshots of the current VM window content
GUI: allow automatically sorting of the VM list
GUI: allow starting of headless VMs from the GUI
GUI: allow reset, shutdown and poweroff from the Manager window
GUI: allow to globally limit the maximum screen resolution for guests
GUI: show the full medium part on hovering the list of recently used ISO images
GUI: do not create additional folders when a new machine has a separator character in its
name
GUI: don’t crash on terminate if the settings dialog is still open
GUI: consider scaled DPI values when display fonts on Windows hosts
Snapshots: fixed a crash when restoring an old snapshot when powering off a VM
Clipboard: disable the clipboard by default for new VMs (see chapter 13.3.2.3, Clipboard, page 206). It can be enabled at any time using the VM menu.
Settings: sanitise the name of VM folders and settings file
Settings: allow to store the iSCSI initiator secret encrypted
NAT: improvements for the built-in TFTP server
E1000: 802.1q VLAN support
Storage: implemented burning of audio CDs in passthrough mode
Storage: fixed audio CD passthrough for certain media players
Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
Storage: added support for QED images
Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
Storage: added readonly support for VHDX images
Solaris additions: added support for X.org Server 1.11 and 1.12
Solaris additions: switched to using an in-kernel mouse driver
Windows hosts: no need to recreate host-only adapters after a VirtualBox update
Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options

New in Oracle VM VirtualBox SDK 4.2.0 r80231 RC2 (Aug 22, 2012)

Improved Windows 8 support, in particular many 3D-related ?xes
GUI: VM groups (bug #288)
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards, in combination with an ICH9 chipset con?guration bug #8805)
Resource control: added support for limiting network IO bandwidth; see chapter 6.9, Limiting bandwidth for network I/O, page 96
Added possibility to start VMs during system boot on Linux, OS X and Solaris; see chapter 9.24, Starting virtual machines during system boot, page 175 (bug #950)
Added experimental support for Drag’n’drop from the host to Linux guests. Support for more guests and for guest-to-host is planned. (bug #81)
Added support for Host parallel port passthrough on Windows platform
VMM: improved VM context switch performance for Intel CPUs using nested paging
VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
VMM: Fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9; bug 9941)
VMM: Fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests e.g. old OS/2 releases)
VMM: support recent VIA CPUs (bug #10005)
GUI: network operations manager
GUI: allow taking screenshots of the current VM window content (bug #5561)
GUI: allow automatically sorting of the VM list
GUI: allow starting of headless VMs from the GUI
GUI: allow reset, shutdown and poweroff from the Manager window
GUI: allow to globally limit the maximum screen resolution for guests
GUI: show the full medium part on hovering the list of recently used ISO images
GUI: do not create additional folders when a new machine has a separator character in its name (bug #6541)
GUI: don’t crash on terminate if the settings dialog is still open (bug #9973)
Snapshots: Fixed a crash when restoring an old snapshot when powering off a VM (bug 10491)
Settings: sanitise the name of VM folders and settings ?le (bug #10549)
Settings: allow to store the iSCSI initiator secret encrypted
E1000: 802.1q VLAN support (bug #10429)
Storage: implemented burning of audio CDs in passthrough mode
Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
Storage: added support for QED images
Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
Storage: added readonly support for VHDX images
Solaris additions: added support for X.org Server 1.11 and 1.12
Windows hosts: no need to recreate host-only adapters after a VirtualBox update Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options

New in Oracle VM VirtualBox SDK 4.1.20 r80170 (Aug 21, 2012)

New in Oracle VM VirtualBox SDK 4.2.0 r80014 RC1 (Aug 13, 2012)

Improved Windows 8 support, in particular many 3D-related fixes
GUI: VM groups (bug #288)
GUI: expert mode for wizards
GUI: allow to alter some settings during runtime
Support for up to 36 network cards, in combination with an ICH9 chipset configuration (bug #8805)
Resource control: added support for limiting network IO bandwidth; see chapter 6.9, Lim- iting bandwidth for network I/O, page 96
Added possibility to start VMs during system boot on Linux, OS X and Solaris; see chapter 9.24, Starting virtual machines during system boot, page 175 (bug #950)
Added experimental support for Drag’n’drop from the host to Linux guests. Support for more guests and for guest-to-host is planned. (bug #81)
Added support for Host parallel port passthrough on Windows platform In addition, the following items were fixed and/or added:
Mac OS X hosts: sign application and installer to avoid warnings on Mountain Lion
VMM: improved VM context switch performance for Intel CPUs using nested paging
VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)
VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9; bug #9941)
VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests (e.g. old OS/2 releases)
VMM: support recent VIA CPUs (bug #10005)
GUI: network operations manager
GUI: allow taking screenshots of the current VM window content (bug #5561)
GUI: allow automatically sorting of the VM list
GUI: allow starting of headless VMs from the GUI
GUI: allow reset, shutdown and poweroff from the Manager window
GUI: allow to globally limit the maximum screen resolution for guests
GUI: show the full medium part on hovering the list of recently used ISO images
GUI: do not create additional folders when a new machine has a separator character in its name (bug #6541)
GUI: don’t crash on terminate if the settings dialog is still open (bug #9973)
Snapshots: fixed a crash when restoring an old snapshot when powering off a VM (bug
#10491)
Settings: sanitise the name of VM folders and settings file (bug #10549)
Settings: allow to store the iSCSI initiator secret encrypted
E1000: 802.1q VLAN support (bug #10429)
Storage: implemented burning of audio CDs in passthrough mode
Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images
Storage: added support for QED images
Storage: added support for QCOW (full support for v1 and readonly support for v2 images)
Storage: added readonly support for VHDX images
Solaris additions: added support for X.org Server 1.11 and 1.12
Windows hosts: no need to recreate host-only adapters after a VirtualBox update
Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options

New in Oracle VM VirtualBox SDK 4.1.18 r78361 (Jun 20, 2012)

New in Oracle VM VirtualBox SDK 4.1.16 r78094 (May 22, 2012)

New in Oracle VM VirtualBox SDK 4.1.14 r77440 (Apr 26, 2012)

New in Oracle VM VirtualBox SDK 4.1.12 r77218 (Apr 2, 2012)

New in Oracle VM VirtualBox SDK 4.1.10 r76795 (Mar 13, 2012)

GUI: if 3D support on the host is not available for some reason, do not only disable this VM setting but also uncheck the checkbox
VMM: fixed a potential problem causing to schedule interrupts during SYSEXIT right after STI
VMM: fixed a potential guest memory corruption issue with page fusion
VMM: adjusted the module matching algorithm for page fusion a little, generally resulting in slightly more shared pages
Main: host interfaces no longer have "defaults" for IP address and network mask attributes
Main: don't depend on a password for certain guest control operations (bug #10030)
3D Support: fixed Windows XP hosts support (4.1.8 regression; bugs #10071 and #10088)
3D Support: rendering fixes for Linux hosts with NVIDIA graphics
3D Support: fixed saved state issues (4.1.8 regression; bug #10126)
3D Support: WDDM driver: fixed powershell_ise crashes (bug #10167), make WPF-based apps work with Aero enabled, fixed additional possible WinSAT crashes
VRDP: fixed remote clipboard compatibility issues with some clients
Storage: fixed a possible data corruption when compacting VDI or VHD images with snapshots (32-bit hosts only)
iSCSI: fixed crash when using incorrect credentials when authenticating with a LIO target (bug #10173)
Serial: don't abort in host mode under rare error conditions (non-Windows hosts only)
SDK: actually ship current C bindings
SDK: fixed the Java glue code for JDK 1.7.0 (bug #9848)
SDK: added Python example
Metrics: make metrics collection more robust regarding blocked VMs
Web service: added SSL/TLS support
VBoxShell: fixed Guest Additions information lookup
Solaris installer: fixed dependency checking while installing VirtualBox in a zone
Linux hosts/guests: Linux 3.3-rc1 compile fixes
Solaris hosts: fixed debug kernel panics while opening module CTF data (bug #9591)
Mac OS X hosts: fixed Python support on Lion
Linux Additions: make 3D passthrough work on OL/RHEL 6.2 (bug #10010)
Linux Additions: fixed missing implementation when copying shared folder data through kernel high memory (bug #9878)
Linux Additions: make sure all data is written when closing a memory mapped file on a shared folder
Linux Additions: added support for X.Org Server 1.12
Solaris Additions: fixed guest kernel driver to load properly on guest reboot (4.1.8 regression; bug #10113)
Solaris Additions: fixed missing 64-bit OpenGL library VBoxOGL.so (bug #10151)
Solaris Additions: fixed VBoxService import and start for Solaris 11 guests.
Windows Additions: some Windows 8 adaptions
Windows Additions: several fixes for shared folders (bug #9753)
Guest control: miscellaneous bugfixes

New in Oracle VM VirtualBox SDK 4.1.8 r75467 (Dec 19, 2011)

New in Oracle VM VirtualBox SDK 4.1.6 r74713 (Nov 4, 2011)

New in Oracle VM VirtualBox SDK 4.1.4 r74291 (Oct 4, 2011)

VMM: fixed PAE guests running on 32-bit hosts (4.0 regression; bug #9458)
VMM: fixed INVALID_PARAMETER guru meditation caused by insufficient memory conditions (4.1.0 regression; bug #9240)
VMM: fixed clobbered CPU registers during stos/lods/ins/outs emulation under rare circumstances
VMM: another fix for 64-bit guests on recent AMD CPUs
GUI: warn the user if he uses an outdated extension pack and allow to download and upgrade in that case (bug #8025)
GUI: fixed spurious LCtrl key events on some Windows hosts (4.0.6 regression; bug #373)
VBoxManage: another fix for extpack install --replace (bug #9308)
VBoxManage: allow to specify the UUID of the target image in convertfromraw
VRDP: fixed a rare crash when two or more clients connect to the server (bug #9503)
VRDP: fixed a case when a client was not resized correctly (bug #9242)
USB: make device capturing work on Windows hosts with usbhub class filter drivers installed (bug #9298); bugfixes for Windows host USB support
VHD: fixed reads crossing block boundaries (bug #8532)
VMDK: fixed progress indicator when creating split VMDK images
Floppy: fixed medium size detection for physical mediums (Windows hosts only)
Main: fixed VM initialization if a shared folder does not exist (bug #7941)
Main: fixed possible deadlock between hard disk enumeration and resetting of immutable disks (bug #9549)
Main: fixed not detaching of virtual storage after a snapshot restore operation (bug #8296)
Main: always reset modified state after restoring a snapshot (bug #9387)
Main: fixed writing of changed VM settings to disk when using snapshots (bug #8932)
Main: fixed taking screen shots (e.g. the preview window) for headless VMs if the Guest Additions are active
Virtio-net: fixed the problem with UDP packets exceeding MTU (bug #9370)
3D Support: fixed incorrect rendering and possible crashes when switching to/from fullscreen with enabled 2D acceleration
3D Support: fixed compiz under ubuntu 9.10
Guest control: Miscellaneous small bugfixes
Windows hosts installer: fixed ADDLOCAL usage on command line (4.1.0 regression; bug #9488)
Windows hosts installer: fixed dangling shortcut to the .chm help file (bug #9646)
Windows hosts installer: try to fix installation error 2869 which appeared under certain circumstances (bug #9664)
Windows hosts: VBoxHeadless should never open a separate console window (bug #3549)
Guest Additions: fixed hang while waiting for guest execution output (4.1.2 regression; bug #9446)
Windows Additions: fixed swapped mouse cursor hotspot coordinates (4.1.0 regression; bug #9447)
Windows Additions: fixed PAGE_FAULT_IN_NONPAGED_AREA BSOD in VBoxDisp.dll when running SnippingTool (bug #9508)
Windows Additions: make image viewer work correctly with Aero enabled (Vista and Windows 7)
Windows Additions: fixed incorrect window border blurs under Aero with ATI cards (Vista and Windows 7)
Windows Additions: fixed incorrect rendering when moving 3D applications outside guest desktop and back under Aero (Vista and Windows 7)
Windows Additions: fixed guest hangs when switching back from fullscreen text mode apps (bug #9636)

New in Oracle VM VirtualBox SDK 4.1.2 r73507 (Aug 16, 2011)

VMM: fixed 64-bit guests on AMD Fusion CPUs (bug #8824)
VMM: fixed handling of the sysenter/sysexit machine instructions in 64-bit guests on Intel hosts
GUI: added linked clone support
GUI: fixed error check when changing the VM controller settings (4.1.0 regression; bug #9246)
GUI: fixed the inclusion of additional information (license, vendor, ...) on OVF export
GUI: when taking a snapshot from the VM selector, don't do a live snapshot
GUI: fixed immediate crash during start on certain environments due to a library version conflict
Guest control execution: implemented copying single files from guest to the host (directories and filters not supported yet)
Guest control execution: limited to serve up to 5 guest processes at a time by default
Main: return the correct RDP default port fixing settings warnings in the GUI if the remote display was enabled at runtime (bug #9368)
VBoxSVC: made the path comparison OS independent when images are registered (bug #9303)
VBoxSVC: several fixes/performance improvements for cloning of VMs
Snapshots: fixed "Solid-State drive" flag survival on snapshot creation (bug #9379)
VBoxManage: implemented copyfrom and stat guest control tools to copy files from guest to host and to check for existence of files on the guest
VBoxManage: fixed extpack install --replace (bug #9308)
VBoxManage: allow to start multiple VMs with startvm
VBoxManage: experimental support for SATA CD/DVD hotplugging
Mouse support: fixed an off-by-one pointer position error affecting Windows guests (bugs #7566, #9321)
VRDP: fixed a case when the screen was not redrawn correctly (bug #9242)
NAT: changed TCP connection establishment according to Winsock API requirements (Windows hosts only; bug #8919)
USB: fixed device recognition issues (bugs #9299) and fixed several device capturing issues (Windows hosts; bug #9299)
USB: fixed issues with remote filters being applied to local USB devices
OVA: fixed import of renamed OVA files (bug #9033)
Windows host: fixed icon for .VDI files (bug #9393)
Guest Additions: keep logged in user count in out-of-memory situations and warn about it
Windows Additions: fixed file truncation on a shared folder with some applications (bugs #9276, #9315)
Windows Additions: fixed shared folder issues with antivirus software and 64 bit Windows guests (bug #9318)
Windows Vista and 7 guests: WDDM driver fixes and performance enhancements, fixed WinSAT crashes (#9267)

New in Oracle VM VirtualBox SDK 4.1.0 r73009 (Jul 19, 2011)

The following major new features were added:
Support for cloning of VMs: full clones can be created through the GUI and VBoxManage, linked clones only through VBoxManage
GUI: enhanced wizard for creating new virtual disks
GUI: new wizard for copying virtual disks
GUI: keep the aspect ratio in scale mode (Windows and OSX hosts only)
VMM: raised the memory limit for 64-bit hosts to 1TB
Experimental support for PCI passthrough for Linux hosts, see the manual for more information
Windows guests: Experimental WDDM graphics driver, supporting Windows Aero and providing Direct3D support using a cleaner approach (no need to install the guest drivers in Safe Mode anymore)
Guest Additions: status of modules and features can now be queried separately by the frontends
Networking: new network attachment mode "Generic Driver", which offers an open plugin architecture for arbitrary and separately distributable virtual network implementations
Host-only Networking: fixed host crash in kernels prior to 2.6.29
New Networking Mode UDP Tunnel: allows to interconnect VMs running on different hosts easily and transparently, see the manual for more information
Experimental support for SATA hard disk hotplugging available with VBoxManage
The following items were fixed and/or added:
VMM: more SMP timer fixes
VMM: fixed sporadic recompiler crashes with SMP guests
VMM: many small fixes
GUI: when reverting to a snapshot, ask for taking a snapshot of the current state
GUI: added a View menu
GUI: added a setting for the promiscuous mode policy for internal networks, bridged networks and host-only networks
GUI: added slider for setting the CPU execution cap allowing to limit the amount of CPU time spent for the execution of the guest, see the manual for more information.
GUI: the VM description is editable during the runtime of a VM
GUI: added proxy settings
GUI: made the number of SATA ports configurable
GUI: decrease time before showing the VM configuration dialog
VBoxManage: more convenient configuration of storage controller attachments by automatically determining the port or device parameter when a storage controller has only one port or device per port
VBoxManage: changed syntax of the guestcontrol command group, fixed various bugs, removed obsolete options
VBoxBalloonCtrl: new service for automatic dynamic adjustment of the balloon size for running VMs
Settings: machine names and snapshot names are not allowed to be a valid UUID
Settings: provide better diagnostics if a single medium is used twice in a VM configuration
Settings: provide better diagnostics for errors in medium create/merge/clone operations, and fix memory leaks in error cases
Storage: ATA/SATA drives can be marked as non-rotational, i.e. the guest OS will detect them as a SSD if supported, which can improve performance
Storage: virtual CD/DVD images will be detached if the guest ejects the medium, unless the drive is marked to handle ejects only on a temporary basis
Storage: the medium UUID can be changed again when attaching a medium for the first time, which allows using images which are exact duplicates including the UUID
Storage: fixed possible data corruption under certain circumstances with VHD and Parallels images
Storage: fixed unnecessary expansion when cloning differential images in VDI format
Storage: fixed detection code to handle empty files for VDI and VMDK format
Storage: fixed access to CD/DVD images beyond 4GB when using the SATA controller
Floppy: several bugs have been fixed
Floppy: make it possible to unmount a host floppy disk
BIOS: disk-related structures are now checksummed correctly
USB: many fixes for the Windows USB host driver
NAT: reduced memory footprint
Networking: fixed the problem with segmentation offloading when several VMs are transmitting in parallel
Networking: workaround for a bug in wireshark when operating directly on a capture file created by VirtualBox
Serial: announce the serial devices in the ACPI tables to make Windows guests find the virtual hardware
VRDP: support for TLS connections
VRDP: support for multimonitor client configurations with MS RDP clients
VRDP: fixed a rare screen corruption
3D support: fixed GL_VERSION string for different locales
Webservice: fixed timeout handling with HTTP 1.1 keepalive, and be more robust when connections fail
VBoxSVC: fixed regression when several clients trigger autostart simultaneously
Main: fixed incorrect handling of the medium location for media which are not file based (e.g. iSCSI), which resulted in confusing location values in many places
JAX-WS client bindings: fixed resource leak
Sources: fixed USB 2.0 support using extension packs for non-official builds
Windows hosts: fixed copy'n'paste in the GUI and for the VM window
Windows hosts (64-bit only): enabled removing of all mediums when removing a VM
Windows hosts (64-bit only): enabled live snapshot deletion
Windows hosts: use native controls in the installer
Solaris hosts: fixed preemption issue with Solaris 11 hosts (builds 166 and above)
Solaris hosts: better control of USB device access on Solaris 11 hosts
Guest Additions: improved driver installation on Windows guests
Guest Additions: fixed high CPU usage while executing guest programs from the host

New in Oracle VM VirtualBox SDK 4.0.12 r72916 (Jul 19, 2011)

New in Oracle VM VirtualBox SDK 4.0.10 r72479 (Jul 19, 2011)

New in Oracle VM VirtualBox SDK 4.0.8 r71778 (Jun 27, 2011)

New in Oracle VM VirtualBox SDK 4.0.6 r71344 (Apr 21, 2011)

VMM: fixed incorrect handling of ballooned pages when restoring a VMM from a saved state
VMM: don't crash on hosts with more than 64 cores / hyperthreads; implemented support for up to 256 host cores (except Windows hosts; bug #8489)
VMM: fixed guru meditation for PAE guests running on hosts without PAE (bug #8006)
VMM: fixed slow Linux guests with raw mode and recent guest kernels (bug #8726)
GUI: support host key combinations (bug #979)
GUI: fixed progress indicator (bug #7814)
GUI: show the mouse pointer while the VM is paused if the USB tablet mouse emulation is used (bug #6799)
GUI: adapt the snapshot folder as well when renaming a VM (bug #8469)
GUI: persistently remember the last folders of the disk/DVD/floppy selectors
GUI: never allow to start a VM with USB-2.0 activated if the proper extension pack is missing (bug #8182)
GUI: fixed hang/crash when opening a file dialog in an non-existing folder (bug #8673)
Snapshots: fixed a bug which could lose entries in the media registry when restoring a snapshot (bug #8363)
Snapshots: allow snapshots to be stored in the VM directory
3D support: fixed a crash if a VM was forced to terminate (Windows hosts only; bug #7133)
Storage: fixed memory leak (4.0 regression; bug #7966)
Storage: fixed access to iSCSI targets over internal network
Storage: fixed reading from disks with more than one snapshot for VHD and VMDK images with disabled host cache (bug #8408)
Storage: fixed a possible hang during VM suspend after an I/O error occurred
Storage: fixed a possible hang during VM suspend / reset (bug #8276, #8294)
Storage: automatically create a diff image when attaching a streamOptimized VMDK image to a VM
ATA/SATA: fixed automounting of virtual CD/DVD mediums with recent Linux distributions by correctly reporting the current profile as 'none' if no medium is present
Buslogic: fixed emulation for certain guests (e.g. jRockit VE)
Host-Only Networking: fixed interface creation failure on Windows hosts (4.0.4 regression; bug #8362)
Host-Only & Bridged & Internal Networking: fix for processing promiscuous mode requests by VMs, defaulting to switch behaviour
Host-Only Networking: fixed connectivity issue after resuming the host from sleep (bug #3625)
Bridged Networking: support for interface bonding on Mac OS X hosts (bug #8731)
NAT: fixed processing of ARP announcements for guests with static assigned IPs (bug #8609)
VRDP: backward compatibility with VRDPAuth external authentication library (bug #8063)
Shared Folders: don't fail to start a VM if a path is not absolute, for example when importing an OVF from a different host (bug #7941)
Audio: fixed crash under certain conditions (bug #8527)
USB: fixed a crash when plugging certain USB devices (bug #8699)
HPET: fixed time jumps when reading the counter (bug #8707)
OVF/OVA: automatically adjust disk paths if the VM name is changed on import
OVF/OVA: fix export to slow medias
OVF/OVA: automatically repair inconsistent appliances with multiple disks (bug #8253)
rdesktop-vrdp: fixed an assertion triggered under certain conditions (bug #8593)
Windows hosts: fixed occasional hangs during VM shutdown because sometimes COM was not properly uninitialized
Windows Additions: fixed Sysprep parameter handling
Windows Additions: fixed spontaneous guest reboots under certain circumstances (4.0.2 regression; bugs #8406, #8429)
Windows Additions: added auto logon support for locked workstations on legacy Windows versions
Windows Additions: fixed driver bugcheck error when handling PnP messages (4.0 regression; bug #8367)
Windows Additions: fixed memory leak in VBoxVideo
Guest Additions: various bugfixes for guest control execution
Webservice: use own log file, with log rotation to limit size

New in Oracle VM VirtualBox SDK 4.0.4 r70112 (Feb 18, 2011)

VMM: fixed recompiler crashes under certain conditions (bugs #8255, #8319 and further)
VMM: fixed running 64-bit guests on 32-bit host with nested paging enabled on AMD CPUs (4.0 regression; bug #7938)
VMM: fixed timing issues / hangs for certain guests using the programmable interval timer (bugs #8033 and #8062)
VMM: large page and monitoring fixes for live snapshots (bugs #7910, #8059, #8125)
GUI: fixed error message when trying to exceed the maximum number of host network interfaces
GUI: fixed saving of changes to the metadata of an existing snapshot (bug #8145)
GUI: fixed rare crash on X11 hosts (bug #8131)
GUI: when selecting a shared folder, start the file dialog in the users home directory (bug #8017)
ExtPack: enforce the correct permissions which might be restricted by umask when creating directories (non-Windows hosts only; bug #7878)
VBoxSDL: fixed crash when starting by specifying the VM UUID (4.0 regression; bug #8342)
VBoxManage: allow savestate even if the VM is already paused
VBoxManage: fixed modifyvm --synthcpu (bug #6577)
VBoxManage: fixed hang when doing guestcontrol execute –wait-for exit and displaying process status on exit (bug #8235)
VBoxManage: decreased CPU load during guestcontrol execute –wait-for exit/stdout while waiting for the guest process to terminate (bug #7872)
VBoxManage: fixed list hostdvds/hostﬂoppies
VBoxManage: fixed storageattach for host DVD drives and host ﬂoppy drives
Metrics: introduced RAM/VMM base metric.
Main: improved sanity check when taking a VM screen shot (bug #7966)
Main: fixed a crash under rare circumstances if a VM failed to start
Main: fixed attaching of immutable disk images (bug #8105)
Main: fixed a crash at VM shutdown (bug #6443)
Main: fixed incorrect handling of cross-referenced medium attachments (bug #8129)
Settings: fixed truncating of big integer values (4.0 regression)
Settings: properly store the ICH9 chipset type (bug #8123)
Host-Only & Bridged Networking: fixed VBox DHCP server startup issue for Windows hosts (4.0 regression; bug #7905)
Host-Only Networking: re-create vboxnetX interfaces after vboxnetadp.ko module reload on Linux and Darwin (bugs #5934, #6341)
NAT: fixed an mbuf leak under rare circumstances (bug #7459)
ACPI: don’t allow the guest to enter S4 by default and don’t announce S1 and S4 in the ACPI tables if disabled (bug #8008)
Graphics card: made re-enabling disabled screens work correctly to prevent problems when X11 guests enter screen saving mode (bug #8122)
Storage: fixed write errors with snapshots if the host cache is disabled (4.0 regression; bug #8221)
ATA/SATA: fixed reset handling after ACPI suspend/resume
BusLogic: fixed hang with SMP VMs
Serial: another attempt to prevent lost characters during transmission (bug #1548)
Linux hosts/guests: Linux 2.6.38-rc1 compile fixes
Mac OS X hosts: fixed VBoxSVC crash when listing host interfaces without default gateway (64-bit hosts only; bug #7955)
Solaris/Darwin hosts: fixed VM CPU execution cap
X.Org guests: fixed a crash on X server restart (bug #8231)
X.Org guests: support X.Org Server 1.10 pre-release and Ubuntu 11.04 Alpha.
X.Org guests: Add EDID emulation in the graphics driver to prevent GNOME settings daemon changing the mode on login.
X.Org guests: never send graphics modes to the host that older VirtualBox versions can’t handle.
Linux Additions: fixed a memory leak in the shared folders code if a host link is not readable (bug #8185)
Windows Additions: fixed handling of Security Attention Sequence (SAS) with VBoxGINA

New in Oracle VM VirtualBox SDK 4.0.0 r68743 Beta 2 (Dec 10, 2010)

This version is a major update. The following major new features were added:
Reorganization of VirtualBox into a base package and Extension Packs;
New settings/disk ﬁle layout for VM portability; see chapter 10.1, Where VirtualBox stores
its ﬁles, page 149.
Major rework of the GUI (now called “VirtualBox Manager”):
Redesigned user interface with guest window preview (also for screenshots)
New display mode with downscaled guest display
Support for creating and starting .vbox desktop shortcuts (bug #1889)
The VM list is now sortable
Machines can now be deleted easily without a trace including snapshots and saved
states, and optionally including attached disk images (bug #5511; also, VBoxManage
unregistervm --delete can do the same now)
Open Virtualization Format Archive (OVA) support; see chapter 1.12, Importing and export-
ing virtual machines, page 25.
VMM: support more than 1.5/2 GB guest RAM on 32-bit hosts
New virtual hardware:
Intel ICH9 chipset with three PCI buses, PCI Express and Message Signaled Interrupts
(MSI)
Intel HD Audio, for better support of modern guest operating systems (e.g. 64-bit
Windows; bug #2785).
Resource control: added support for limiting a VM’s CPU time and IO bandwidth.
Storage: support asynchronous I/O for iSCSI, VMDK, VHD and Parallels images
Storage: support for resizing VDI and VHD images
Guest Additions: support for copying ﬁles into the guest ﬁle system; the Windows Additions
can now automatically update themselves (requires installed Windows Guest Additions 4.0
or later)
Language bindings: uniform Java bindings for both local (COM/XPCOM) and remote
(SOAP) invocation APIs
Guest Additions: support for multiple virtual screens in Linux and Solaris guests using
X.Org server 1.3 and later.
In addition, the following items were ﬁxed and/or added:
VMM: Enable large page support by default on 64-bit hosts (applies to nested paging only)
VMM: ﬁxed guru meditation when running Minix (VT-x only; bug #6557)
GUI: built-in creation of desktop ﬁle shortcuts to start VMs on double click (bug #2322)
GUI: add conﬁguration dialog for port forwarding in NAT mode (bug #1657)
GUI: show the guest window content on save and restore
GUI: certain GUI warnings don’t stop the VM output anymore
3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)
3D support: ﬁxed various clipping/visibility issues (bugs #5659, #5794, #5848, #6018,
#6187, #6570)
3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug
#7395)
3D support: ﬁxed XPDM Windows Explorer crashes on Windows Vista/Win7 guests
3D support: ﬁxed Direct3D 8/9 support on WindowsXP guests
2D Video acceleration: multimonitor support
VRDP: ﬁxed rare crash in multimonitor conﬁguration
VRDP: support for upstream audio
Display: ﬁxed occasional guest resize crash
NAT: port forwarding rules can be applied at runtime
SATA: allow to attach CD/DVD-ROM drives including passthrough (bug #7058)
Floppy: support readonly image ﬁles, taking this as the criteria for making the medium
readonly (bug #5651)
Audio: the DirectSound backend now allows VMs to be audible when another DirectSound
application is active, including another VM (bug #5578)
EFI: support for SATA disks and CDROMs
BIOS: reduce the stack usage of the VESA BIOS function #4F01 (Quake ﬁx)
OVF/OVA: signiﬁcant performance improvements during export and import
OVF/OVA: creation of the manifest ﬁle on export is optional now
OVF/OVA: allow overwriting the target disk format on import
OVF/OVA: ﬁxed export of VMs with iSCSI disks
Storage: Apple DMG image support for the virtual CD/DVD (bug #6760)
Linux host USB support: introduced a less invasive way of accessing raw USB devices (bugs
#1093, #5345, #7759)
Guest Additions: Shared Folders now can be marked as being auto-mounted on Windows,
Linux and Solaris guests
Linux Additions: Shared Folders now support symbolic links (bug #818)
Linux Additions: combined 32-bit and 64-bit additions into one ﬁle
Windows Additions: automatic logon on Windows Vista/Windows 7 is now able to handle
renamed user accounts; added various bugﬁxes

New in Oracle VM VirtualBox SDK 3.1.2 Build 56127 (Dec 17, 2009)

VMM: ﬁxed SMP stability regression
USB: ﬁxed USB related host crashes on 64 bits Windows hosts (#5237)
Main: wrong default HWVirtExExclusive value for new VMs (bug #5664)
Main: DVD passthrough setting was lost (bug #5681)
VBoxManage: iSCSI disks do not support adding a comment (bug #4460)
VBoxManage: added missing –cpus and –memory options to OVF –import
GUI: ﬁxed VBox URL in update dialog for German and Dutch languages
GUI: NLS updates
OVF: ﬁxed export of non standard storage controller names (bug #5643)
Solaris hosts: several USB ﬁxes (including support for Apple iPhone)
Mac OS X hosts: several ﬁxes for the 3D support
Mac OS X hosts: re-enabled CMD+Key combinations, even if the Host-Key isn’t CMD (bug #5684)
Mac OS X hosts: ﬁxed to fast scrolling if the mouse wheel is used inside the guest (bug #5672)
Mac OS X hosts: dock & menubar don’t disappear in fullscreen when the VM is not running on the primary display (bug #1762)
Mac OS X hosts: added an option for enabling “Auto show Dock & Menubar in fullscreen” (bug #5636)
Windows host installer: ﬁxed starting VBox with wrong privileges right after installation (bug #4162)
Host interface and host-only networking: prevent driver from unloading while a VM is still active (Windows host only)
Host-only networking: ﬁxed host-only interface creation (Windows host only) (bug #5708)
Virtio-net: don’t crash without an attached network
Virtio-net: ﬁxed the issue with intermittent network in VM with several virtual CPU cores.
NAT: ﬁxed port-forwarding regressions (bug #5666)
NAT: ﬁxed crash under certain conditions (bug #5427)
NAT: ﬁxed resolving of names containing a slash or underscore when using the host resolver DNS proxy (bug #5698)
ATA: ﬁxed sporadic crash when resuming after a VM was forcefully paused (e.g. due to iSCSI target being unavailable)
SATA: ﬁxed raw vmdk disks (bug #5724)
Linux guests: increased the default memory for Redhat and Fedora guests
Linux Guest Additions: ﬁxed installation on RHEL 3.9 guests and on some 64bit guests
Linux Guest Additions: prevent SELinux warnings concerning text relocations in VBoxOGL.so (bug #5690)
X11 guests: ﬁxed mouse support for some Xorg 1.4 guests (openSUSE 11.0)
X11 guests: ﬁxed xorg.conf modiﬁcation for some older Xorg releases (openSUSE 11.1)
Windows guests: ﬁxed some VBoxService shutdown issues
Windows guests: ﬁxed VBoxVideo spinlock issues on NT4
Windows Guest Additions: ﬁxed uninstallation issues of NT4
Shared folders: ﬁxed resolving of symlink target (bug #5631)
2D Video acceleration: delay loading of OpenGL dlls for Windows hosts to avoid GUI crashes on misconﬁgured systems
2D Video acceleration: ﬁxed issues with video picture not displayed on playback