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BitDefender Virus Definitions October 29, 2021

Offline virus definitions for BitDefender

Free Download

Average rating: 5/5 (2 votes)
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BitDefender Virus Definitions screenshotCrucial security against e-threats. Best Protection for 3 years straight. Great for system speed (AV- TEST). Very easy to use.

Works with BitDefender Professional Plus, BitDefender Standard, BitDefender Antispyware, BitDefender Internet Security

Because new dangers come out every day, BitDefender antivirus must be updated rhythmically. The updates can be of following kinds:

- Spam signatures: rules for the heuristic and URL filters improving the influence of the antispam engine. Shown as AntiSpam Update.
- Product upgrades: recent product features, scan methods and hotfixes. Displayed as Product Update. Occasionally, installing these updates needs restarting the PC.

Occasional updates can be done anytime you want, even when the product is configured to automatically update the database:

- Open BitDefender and click Update.
- Click Update now to start the update process.

If the option Prompt sooner downloading updates was selected in the Settings, and when updates are accessible, a list of the updates available for download is shown. Pick the desired utility to install and then click on "Details" in order to see the file download details.


  • Updating your antivirus solution will keep your computer protected from the latest threats.
  • The package will update your virus signature database even if you don't have access to Internet.
Name BitDefender Virus Definitions
Version October 29, 2021
Developer | see all products from this developer
Product Homepage BitDefender Virus Definitions
License Free (Freeware)
Last Week Downloads 6
All Time Downloads 45,384
Filename weekly.exe
Filesize 273.4MB
MD5 Checksum C4AAD5C5D266359547A5AA0AA1DE7AFC
OS Support Windows All
Category Utilities


Old Versions

Software Date Added
BitDefender Virus Definitions November 01, 2021 - Latest Version

Download the free BitDefender Virus Definitions