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. Go to Start and then point to All Programs.
2. From the "All Programs" menu select F-PROT Antivirus.
3. Select Uninstall.
4. Click Yes to let Setup close the components (e.g. Scheduler and Realtime Protector).
5. In the "InstallShield Wizard" window, select Remove to remove all installed components.
6. You may need to restart your computer for the change of configuration to take effect.

1. Start by closing the Update Monitor. Do the following:
1. Go to Start -> Control Panel -> Administrative Tools -> Services.
2. Right-click "F-PROT Antivirus Update Monitor" and select Properties. In the "Startup type" select Manual. Click OK to confirm this action.
3. Then restart your computer.
2. When the computer has rebooted, close the RealTime Protector and the Scheduler.

To close the RealTime Protector and the Scheduler:

1. In system tray, right-click the F-StopW and Scheduler icons and select Exit.
3. After closing them, delete the F-PROT Antivirus folder (default location: C:\PROGRAM FILES\FSI\F-PROT).

If you receive a message regarding denied access when deleting the F-PROT folder, please open the F-PROT Antivirus folder and delete the files one by one. You need to continue with the instructions even though you cannot remove all the files.

4. Then, go to Start -> Run, type regedit and click OK.
5. Remove the following registry keys below:

WARNING: We strongly recommend that you back up the registry before you make any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify only the keys that are specified. Please read the How to back up the Windows registry for instructions.




[HKEY_LOCAL_MACHINE\SOFTWARE\FRISK Software International]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
{9FD12630-1991-46F5-8479-92DE1EAE87DA}]
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\FPA_RTP
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
F-PROT Antivirus Update Monitor



6. Then, remove the shortcuts for F-PROT Antivirus programs from the Start menu.

• I had the trial version and am now unable to successfully install the licensed version
• When I try to run F-PROT Antivirus I receive the error message: "The handle is invalid"