Virus Definitions Apps and Alternatives

18 applications in this hubLast updated: Feb 24th 2022, 08:44 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

     
  • 455,871 downloads
  • 101 MB
Windows Defender Definition Updates

Windows Defender Definition Updates February 24, 2022

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

Feb 24th 2022, 07:48 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 / Windows 11
     
  • 391,008 downloads
  • 102 MB
Microsoft Security Essentials Definition Updates

Microsoft Security Essentials Definition Updates February 24, 2022

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

Feb 24th 2022, 07:48 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 / Windows 11
     
  • 558,244 downloads
  • 322 MB
Avast Virus Definitions VPS

Avast Virus Definitions VPS February 24, 2022

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

Feb 24th 2022, 08:44 GMT
Windows All
     
  • 16,504,405 downloads
  • 795 KB
Avira Antivir Virus Definitions for Avira 10 and Older

Avira Antivir Virus Definitions for Avira 10 and Older February 24, 2022

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

Feb 24th 2022, 07:56 GMT
Windows All
     
  • 387,479 downloads
  • 274 MB
BitDefender Virus Definitions

BitDefender Virus Definitions February 18, 2022

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

Feb 18th 2022, 10:21 GMT
Windows All
     
  • 3,942,598 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
     
  • 3,592,880 downloads
  • 160 MB
McAfee Virus Definitions

McAfee Virus Definitions February 22, 2022

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

Feb 23rd 2022, 05:16 GMT
Windows All
     
  • 246,347 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
     
  • 163,310 downloads
  • 61.2 MB
Trend Micro Virus Pattern File

Trend Micro Virus Pattern File February 23, 2022

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

Feb 24th 2022, 07:20 GMT
Windows All / Unix
     
  • 130,871 downloads
  • 333 MB
Vipre Definition Files

Vipre Definition Files February 23, 2022

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

Feb 23rd 2022, 13:49 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
     
  • 103,751 downloads
  • 53.7 MB
ClamAV Virus Databases

ClamAV Virus Databases 15 February 2021 (Daily) / 14 Jul 2021 (Main) / 8 Mar 2021 (Bytecode)

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

Feb 15th 2022, 12:35 GMT
Windows All
     
  • 80,141 downloads
  • 177 MB
SUPERAntiSpyware Database Definitions Update

SUPERAntiSpyware Database Definitions Update February 23, 2022

Keep SUPERAntiSpyware up-to-date with the latest definitions even if your computer is not connecte...

Feb 24th 2022, 07:43 GMT
Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 59,175 downloads
  • 206 MB
Ikarus Engine Update

Ikarus Engine Update February 23, 2021

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

Feb 23rd 2022, 11:25 GMT
Windows All
     
  • 278,121 downloads
  • 241 MB
F-Secure Virus Definitions

F-Secure Virus Definitions February 23, 2021

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

Feb 23rd 2022, 06:56 GMT
Windows 7 / Windows 7 64 bit / Windows 8 / Windows 8 64 bit / Windows 10 / Windows 10 64 bit / Windows 11
     
  • 14,053 downloads
  • 100 MB
ClamWin Free Antivirus Definition Files

ClamWin Free Antivirus Definition Files 7 March 2021 (Daily) / 25 Nov 2019 (Main)

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

Mar 8th 2021, 09:13 GMT
Windows All
     
  • 2,394 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
     
  • 148,640 downloads
  • 142 MB
Quick Heal Virus Database

Quick Heal Virus Database 22.00 (19 February 2022) / 19.00 (6 February 2022) / 18.00 (6 February 2022)

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

Feb 20th 2022, 23:36 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
     
  • 23,480 downloads
  • 584 MB
Comodo Anti-Malware Database

Comodo Anti-Malware Database 23-February-2022

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

Feb 23rd 2022, 13:35 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