Summary

Product:	F-PROT Antivirus for Windows
Version:	3

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.

Virus signature files are corrupted

Error message that appears:

The reason for this error is that the virus signature files that were downloaded are corrupted. The reason for this can be a bad connection, a proxy server, not enough disk space and so on. The older virus signature files will be restored.

There is a great chance that this is a temporary issue. Therefore we urge you to try to update the virus signature files again if this error occurs.

If updating the virus signature files through the Updater does not solve the problem, try updating the virus signature files manually. Do the following:

1. Disable the RealTime Protector prior to deleting the files. This is done by right-clicking on its icon (F-StopW) in the system tray (bottom right hand corner) and selecting to exit. Make sure that you enable it again afterwards, to do so, run the program and press the RealTime Protector button.
2. Now access the "C:\Program Files\FSI\F-PROT" (default location) folder and delete the following files:

Sign.def
Sign2.def
Macro.def

NB: F-PROT Antivirus engine itself will not run after deleting the definition files (Sign.def, Sign2.def, Macro.def). You will probably receive an error like Error:SIGN.DEF not found.

3. Run the Updater. To do this:
1. Click Start and then All Programs.
2. Locate F-PROT Antivirus for Windows and then select Updater.
3. Click the Update button. Then, the virus signature files will be downloaded and installed immediately.

See also:

• You receive a "Virus signature files are corrupted and that restoration of the old virus signature files failed" error message
• Error messages from F-PROT Antivirus Updater

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