Avast! Virus Definitions download

Avast! Virus Definitions download.

Updates are released at least twice a week.

Click here to download.

Kaspersky Anti-Virus Personal and Lite virus definitions download

The latest virus definitions for Kaspersky Anti-Virus Personal and Lite.

Click here to download the cumulative update.

Click here to download the daily update.

BitDefender 9 Virus Definitions download

How to update BitDefender 9 Virus Definitions.

1. Stop BitDefender Virus Shield and BitDefender Scan Server services.


2. Extract the contents of the cumulative.zip file into the Plugins folder i.e. C://Program Files/Common Files/Softwin/BitDefender Scan Server/Plugins/.
   You need to overwrite the existing files.


3. Start the BitDefender Scan Server and BitDefender Virus Shield services.

Click here to download.

AVG Antivirus Update April 12, 2009

File to manually update AVG when automatic update fails.

Click here to download.

Avira Antivir Virus Definition File Update download

Update AVIRA Desktop for Windows with latest virus definitions and scan engine.

To update Avira:

1. Download the latest virus definition file (IVDF) on a PC with internet access.


2. Start AntiVir Personal Edition Classic / Premium.


3. Click on Update and select Manual Update.


4. Select the downloaded IVDF file.


5. Your AntiVir PersonalEdition Classic / Premium is now up to date.

Click here to download the IVDF file.