Please note that version 6 of F-PROT Antivirus for Windows has been released. We recommend that all Home, Corporate and Mail Server users of version 3 of F-PROT Antivirus for Windows upgrade their program to the newest version as soon as possible.

1. Run F-PROT Antivirus.
2. Click on the Updater button from the menu.
   
   
   Image 1. The F-PROT Antivirus Updater window
   
   
3. Click on the Settings button.
4. Enter your Customer Number EXACTLY like it was in the invoice e-mail you received. You may also check the "Remember my Customer Number" box, so you do not have to enter your Customer Number the next you check for updates (see below).



5. Then, click OK.