Virus Definitions Apps and Alternatives

18 applications in this hubLast updated: Mar 18th 2024, 08:28 GMT

Once installed, anti-malware applications have to be regularly updated with the latest definitions to be able to protect your computer from the newest threats, whether we're talking about ransomware, Trojans, spyware, rootkits, backdoors, or something else.

Most antivirus tools run these checkups automatically and frequently, so you don't have to worry about doing this yourself. However, many companies release virus definitions as separate, offline files, which can be manually downloaded by users.

This might seem unnecessary for those with a round-the-clock Internet connection since the automatic checkup mode should take care of everything in the background, but the virus definition packages can be used to update antimalware programs that don't have Internet access.

For this hub, we've carefully selected the virus definitions of antivirus tools with frequent updates, from daily to weekly and, in some rare cases, monthly. Most of them contain the date of last update in the program version, so you can easily spot the daily updates.

If you're not sure about which antivirus to use, you can check out our hubs with free antivirus and portable antivirus utilities. We also have hubs with apps designed to scan for viruses, along with small-sized tools made to uninstall antivirus products.

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Applications

     
  • 489,004 downloads
  • 127 MB
Windows Defender Definition Updates

Windows Defender Definition Updates March 14, 2024

Install the latest Windows Defender definition updates and make sure your computer is safe from vi...

Mar 14th 2024, 08:36 GMT
Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 401,277 downloads
  • 125 MB
Microsoft Security Essentials Definition Updates

Microsoft Security Essentials Definition Updates March 14, 2024

Manually install the latest antivirus definitions for Microsoft Security Essentials in case your c...

Mar 14th 2024, 18:55 GMT
Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 571,268 downloads
  • 244 MB
Avast Virus Definitions VPS

Avast Virus Definitions VPS March 18, 2024

The latest virus definitions for your Avast antivirus, providing an alternative method to keep the...

Mar 18th 2024, 08:28 GMT
Windows All
     
  • 16,509,629 downloads
  • 795 KB
Avira Antivir Virus Definitions for Avira 10 and Older

Avira Antivir Virus Definitions for Avira 10 and Older March 18, 2024

Download the virus definitions file to easily always keep versions 10 and older of the popular Avi...

Mar 18th 2024, 08:18 GMT
Windows All
     
  • 390,861 downloads
  • 300 MB
BitDefender Virus Definitions

BitDefender Virus Definitions March 8, 2024

The latest virus definitions for BitDefender Antivirus, BitDefender Antivirus Plus and BitDefender...

Mar 11th 2024, 12:10 GMT
Windows All
     
  • 3,943,588 downloads
  • 49 MB
Norton AntiVirus Virus Definitions

Norton AntiVirus Virus Definitions February 28, 2020

Signature packages containing the latest free virus databases for various Symantec antivirus softw...

Feb 28th 2020, 06:13 GMT
Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 3,610,688 downloads
  • 121 MB
McAfee Virus Definitions

McAfee Virus Definitions April 30, 2023

Download McAfee virus pattern and engine updates and make sure that your McAfee antivirus can prot...

May 1st 2023, 13:47 GMT
Windows All
     
  • 246,930 downloads
  • 62.4 MB
Spybot Search and Destroy Detection Update

Spybot Search and Destroy Detection Update 2.9.82

Update the definitions of your Spybot - Search and Destroy manually without requiring the WebUpdat...

Feb 2nd 2022, 17:22 GMT
Windows All
     
  • 167,453 downloads
  • 72.5 MB
Trend Micro Virus Pattern File

Trend Micro Virus Pattern File March 17, 2024

A collection of Virus Pattern Files that are updated to their latest virus database definitions an...

Mar 18th 2024, 08:03 GMT
Windows All / Unix
     
  • 140,821 downloads
  • 365 MB
Vipre Definition Files

Vipre Definition Files March 17, 2024

Keep Vipre up-to-date with the latest definition files by manually installing the required package...

Mar 18th 2024, 08:02 GMT
Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 109,077 downloads
  • 59.7 MB
ClamAV Virus Databases

ClamAV Virus Databases 18 Mar 2024 (Daily) / 16 Sep 2021 (Main) / 22 Feb 2023 (Bytecode)

The up-to-date virus signature files for the ClamAV antivirus, which can be downloaded in case the...

Mar 18th 2024, 07:55 GMT
Windows All
     
  • 87,016 downloads
  • 168 MB
SUPERAntiSpyware Database Definitions Update

SUPERAntiSpyware Database Definitions Update March 17, 2024

SUPERAntiSpyware can only function right when the user, meaning you, update it and prepare it agai...

Mar 18th 2024, 08:02 GMT
Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 62,880 downloads
  • 214 MB
Ikarus Engine Update

Ikarus Engine Update March 17, 2024

Manually update Ikarus Virus Utilities and T3 Command Line Scanner by using this file that provide...

Mar 17th 2024, 18:29 GMT
Windows All
     
  • 283,583 downloads
  • 286 MB
F-Secure Virus Definitions

F-Secure Virus Definitions March 17, 2024

Contains the latest virus definitions for the F-Secure product line, including Workstation, Antivi...

Mar 17th 2024, 18:35 GMT
Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 15,176 downloads
  • 59.7 MB
ClamWin Free Antivirus Definition Files

ClamWin Free Antivirus Definition Files 18 Mar 2024 (Daily) / 16 Sep 2021 (Main)

Keep your ClamWin Free Antivirus definition database up to date by manually adding database files ...

Mar 18th 2024, 07:55 GMT
Windows All
     
  • 2,733 downloads
  • 291 MB
REVE Virus Signature Updates

REVE Virus Signature Updates 18 January 2020

Keep REVE Antivirus, Internet Security and Total Security up to date with the latest virus definit...

Aug 18th 2020, 11:48 GMT
Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit
     
  • 153,924 downloads
  • 266 MB
Quick Heal Virus Database

Quick Heal Virus Database 23.00 (17 September 2023) / 22.00 (2 September 2023) / 19.00 (3 September 2023)

Daily signature and virus definitions updates for your Quick Heal products, allowing the manual up...

Sep 17th 2023, 17:26 GMT
Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 2003 / Windows 2008 / Windows 2008 64 bit / Windows 2008 R2 / Windows Server 2012 / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 29,607 downloads
  • 607 MB
Comodo Anti-Malware Database

Comodo Anti-Malware Database 17-Mar-2024

Update your Comodo Antivirus or Internet Security database to its latest version by using this pac...

Mar 18th 2024, 07:47 GMT
Windows XP / Windows XP 64 bit / Windows Vista / Windows Vista 64 bit / Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11