More information about IVDF and VDF update

Current virus information – indispensable to protect your system

The number of new viruses and malware is increasing continually.  The AntiVir products supply such a professional virus and malware protection through a so-called virus definition file, which is updated several times a day.


AntiVir incremental VDF update (IVDF) (Unicode

Update for: Unicode-aware Products of Avira Antivir Windows Professional, Avira AntiVir Premium, Avira Premium Security Suite and Avira AntiVir Personal - Free Antivirus on Windows XP, 2000 and Windows Vista.

Download IVDF (Unicode)


Beta-VDF and Beta-Engine

All Avira virus definition files (VDFs) and the Avira search engine are thoroughly tested before they are made available on the download servers. This test period does of course broaden the time span between putting new detection patterns into the VDF or new exploits into the engine and their publication.

However, there might be certain scenarios in which it is primarily important to get the most recent VDFs and engine versions as early as possible. For such cases Avira provides untested, so called Beta-VDFs and Beta-Engine versions for downloading.

Beta-VDF and Beta-Engine download