Signature file updates ensure that your PC is protected from the latest viruses. It is very important to make sure that you have the latest signature on your PC.

As new threats emerge, Symantec immediately builds new Virus Definitions Updates and makes them available for download.

Note: The i32 Intelligent Updater package cannot be used to update Symantec AntiVirus Corporate Edition 8.0, 9.0, or 10.0 servers or Norton AntiVirus Corporate Edition 7.6 servers, but can be used to update Corporate Edition clients. The x86 Intelligent Updater package can be used to update Corporate Edition clients and servers.

Which virus definition file do you need?

External Mirror 1
- Supports the following versions of Symantec antivirus software:
· Norton AntiVirus 2011 for Windows XP/Vista/7
· Norton Internet Security 2011 for Windows XP/Vista/7
· Norton AntiVirus 2010 for Windows XP/Vista/7
· Norton Internet Security 2010 for Windows XP/Vista/7
· Norton AntiVirus 2009 for Windows XP Home/XP Pro/Vista
· Norton Internet Security 2009 for Windows XP Home/XP Pro/Vista
· Norton AntiVirus 2008 for Windows XP Home/XP Pro/Vista
· Norton Internet Security 2008 for Windows XP Home/XP Pro/Vista
· Norton 360 version 5.0 for Windows XP/Vista/7
· Norton 360 version 4.0 for Windows XP/Vista/7
· Norton 360 version 3.0 for Windows XP/Vista
· Norton 360 version 2.0 for Windows XP/Vista
· Symantec Endpoint Protection 11.0
· Symantec Endpoint Protection Small Business Edition 12.0
· Symantec Endpoint Protection 12.1

External Mirror 2
- Supports the following versions of Symantec antivirus software:
· Norton AntiVirus 2005 for Windows 2000/XP Home/XP Pro
· Norton AntiVirus 2006 for Windows 2000/XP Home/XP Pro
· Norton AntiVirus 2007 for Windows XP Home/XP Pro/Vista
· Norton 360 version 1.0 for Windows XP/Vista
· Norton SystemWorks (all versions)
· Symantec AntiVirus 3.0 for CacheFlow Security Gateway
· Symantec AntiVirus 3.0 for Inktomi Traffic Edge
· Symantec AntiVirus 3.0 for NetApp Filer/NetCache
· Symantec AntiVirus 10.0 Corporate Edition Client
· Symantec AntiVirus 10.1 Corporate Edition Client
· Symantec AntiVirus 10.2 Corporate Edition Client
· Symantec Mail Security for Domino v 5.x
· Symantec Mail Security for Domino v 7.x
· Symantec Mail Security for Domino (32-bit) v 8.0.x
· Symantec Mail Security for Microsoft Exchange (32-bit)

External Mirror 3
- Supports the following versions of Symantec antivirus software:
· Norton AntiVirus 2005 for Windows 2000/XP Home/XP Pro
· Norton AntiVirus 2006 for Windows 2000/XP Home/XP Pro
· Norton AntiVirus 2007 for Windows XP Home/XP Pro/Vista
· Norton 360 version 1.0 for Windows XP/Vista
· Symantec AntiVirus 3.0 CacheFlow Security Gateway
· Symantec AntiVirus 3.0 for Inktomi Traffic Edge
· Symantec AntiVirus 3.0 for NetApp Filer/NetCache
· Symantec AntiVirus 10.0 Corporate Edition Client
· Symantec AntiVirus 10.1 Corporate Edition Client
· Symantec AntiVirus 10.2 Corporate Edition Client
· Symantec AntiVirus for Bluecoat Security Gateway for Windows 2000 Server/2003 Server
· Symantec AntiVirus for Clearswift MIMESweeper for Windows 2000 Server/2003 Server
· Symantec AntiVirus for Microsoft ISA Server for Windows 2000 Server/2003 Server
· Symantec Mail Security for Domino v 5.x
· Symantec Mail Security for Domino v 7.x
· Symantec Mail Security for Domino (32-bit) v 8.0.x
· Symantec Mail Security for Microsoft Exchange
· Symantec Mail Security for SMTP v 5.x
· Symantec Web Security 3.0 for Windows
· Symantec AntiVirus Scan Engine for Windows

This all inclusive updater will update all of the products listed above. This is useful for updating multiple machines and products with one single package.

External Mirror 4
- Supports the following versions of Symantec antivirus software for 64-bit platforms:
· Norton AntiVirus 2011 for Windows XP/Vista/7 for 64-bit OS only
· Norton Internet Security 2011 for Windows XP/Vista/7 for 64-bit OS only
· Norton AntiVirus 2010 for Windows XP/Vista/7 for 64-bit OS only
· Norton Internet Security 2010 for Windows XP/Vista/7 for 64-bit OS only
· Norton AntiVirus 2009 for Windows XP/Vista for 64-bit OS only
· Norton Internet Security 2009 for Windows XP/Vista for 64-bit OS only
· Norton AntiVirus 2008 for Windows XP/Vista for 64-bit OS only
· Norton Internet Security 2008 for Windows XP/Vista for 64-bit OS only
· Norton 360 version 4.0 for Windows XP/Vista/7 for 64-bit OS only
· Norton 360 version 3.0 for Windows XP/Vista for 64-bit OS only
· Norton 360 version 2.0 for Windows XP/Vista for 64-bit OS only
· Symantec Endpoint Protection 11.0 for 64-bit OS only
· Symantec Endpoint Protection Small Business Edition 12.0 for 64-bit OS only
· Symantec Mail Security for Domino (64-bit) v 8.0.5

External Mirror 5
- Supports the following versions of Symantec antivirus software for 64-bit platforms:
· Symantec AntiVirus 10.0 Corporate Edition Client for 64-bit OS only
· Symantec AntiVirus 10.1 Corporate Edition Client for 64-bit OS only
· Symantec AntiVirus 10.2 Corporate Edition Client for 64-bit OS only
· Norton AntiVirus 2007 for Windows Vista 64-bit OS only
· Norton Internet Security 2007 for Windows Vista 64-bit OS only
· Norton 360 version 1.0 for Windows XP/Vista 64-bit OS only