If you're trying to install F-Secure FREEDOME on Windows 7, you may see the following error message:
Windows needs a digitally signed driver.
This error prevents FREEDOME from being installed.
The reason for this is that the FREEDOME driver has been signed with a certificate that an unpatched Windows 7 is not aware of. Normally, Windows receives updated root certificates automatically from Windows Update. If you have disabled Windows Update or, for some reason, you have not installed the Windows patch that includes this root certificate, the above error occurs.