Please note! Due to diminishing support from Microsoft for Windows 98, 98SE and ME, the version 3 of F-PROT Antivirus for Windows has been ceased with the current subscription. FRISK Software will continue its support and the virus signature files updates for a few more months but will be discontinued completely sometime later this year. This is slightly ahead of the previously announced schedule. For further information, see Life cycle policy for F-PROT Antivirus for Windows.

Download and installation questions

• Am I allowed to install F-PROT Antivirus on more than one computer?
• Am I allowed to install both F-PROT Antivirus for Windows Mail Servers and F-PROT Antivirus for Windows Corporate on the same computer?
• Can I update the virus signature files via FTP?
• Can I use a download manager to download the software?
• Does F-PROT Antivirus run on 64-bit operating systems?
• Downloading and installing version 3 of F-PROT Antivirus
• F-StopW(Open VDD) error
• How can I uninstall the XCP copy protected software?
• I had the trial version and am now unable to successfully install the licensed version.
• I just renewed my subscription but receive an "Subscription expired" error message when trying to update
• Is it possible to install F-PROT Antivirus over a network?
• Is the RealTime Protector installed by default?
• Uninstalling version 3 of F-PROT Antivirus for Windows
• Uninstalling version 3 of F-PROT Antivirus using an automatic removal tool
• Upgrading from version 3 to version 6 of F-PROT Antivirus for Windows
• What are the command-line options for installing F-PROT Antivirus for Windows.
• What are the system requirements for version 3 of F-PROT Antivirus?
• What to do if you are repeatedly being redirected back to the Customer Sign-in page when downloading the program
• When I try to run F-PROT Antivirus I receive the error message: "The handle is invalid"
• Which port does the Updater use?
• Why is Internet Explorer 4.0 or newer a requirement for F-PROT Antivirus for Windows?