Manually removing F-Secure F-secure will not uninstall and the F-Secure options configuration dialog loads at boot time. F-Secure is no longer shipped with MailSite. The product has been replaced by Kaspersky Anti Virus. to manually remove F-Secure, follow the steps below:

1. Open the registry editor
2. Search for f-secure entries
3. Delete those keys
4. Search again for data fellows
5. Delete that entry
6. Reboot (necessary for the next step)
7. Delete the f-secure directory under the program files directory