How to update avira free anti-virus...

Key file for AntiVir PE Classic running in DEMO mode
Hello,

In case you have problems updating AntiVir PersonalEdition Classic and it says

Quoted
Critical error: Keyfile: Key expired [DEMO Mode]



you can download a new keyfile from here:

http://dl1.avgate.net/down/windows/hbedv.key

and copy it to the installation folder of AntiVir (usually it's C:\Program Files\AntiVir PersonalEdition Classic). You may need to overwrite the existing hbedv.key file. Then restart your computer.

From this moment you should be able to update AntiVir. The key is valid for 3 months, but it will be automatically renewed through updates.

Best regards,
Radu
Radu Gheorghe
Avira GmbH
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Taken from Avira Support Forum

http://forum.avira.com/wbb/index.php?page=Thread&threadid=17248