Finding your AVG license number will depend on when you bought it and what system you have.  If you are not sure or don't want to look in the places we will mention, you can search on your computer for a text file called avglicense.txt where we stored the number, or contact us and we will look it up for you.

At first we placed the file in My Documents, but found that other users couldn't find or see it.  There were some cases of someone creating a new user and deleting the old one with the files and it deleted the license file.

For most XP machines in the last year we have stored the avglicense.txt file on the root of the system (usually the C: drive) or c:\avglicense.txt.

The security on Vista makes it difficult to access the root drive, so a handfull of systems have the file back in the main user's documents.  Subsequently we now store the avglicense.txt in the Public folder (C:\Users\Public\avglicense.txt) in Vista.