: Managing the secure environment used for online transactions. System Statistics

fsmainui.exe is a legitimate core executable of the F-Secure Security Suite . It serves as the primary User Interface (UI)

If you do not use F-Secure, uninstall the program properly, and the file will disappear. If the file appears outside the F-Secure folder, scan it immediately.

Never end the fsmainui.exe process via Task Manager unless the process is frozen and unresponsive. If it is running normally, terminating it may cause F-Secure to report that your protection is compromised.

fsmainui.exe is the main executable for the user interface of security software developed by F-Secure Corporation

For a better user experience we recommend using a more modern browser. We support the latest version of the following browsers: For a better user experience we recommend using the latest version of the following browsers: