In short:
fsmainui.exe often works in tandem with the extension to block malicious URLs. If you see warnings in your browser, they are being generated by this main UI process. fsmainui.exe
fsmainui.exe is an executable file associated with the Microsoft Windows operating system, specifically with the Windows Firewall or Windows Security features. The "fsmainui" part of the filename stands for "Windows Firewall Main User Interface." This executable is responsible for the user interface components of Windows Firewall, allowing users to view and configure firewall settings, including inbound and outbound rules, and notifications. In short: fsmainui
Microsoft officially ended support for on April 14, 2015 . The "fsmainui" part of the filename stands for
: If fsmainui.exe is consuming too many resources, it is often due to a stuck update. Open the F-Secure UI. Go to Tools > Check for updates . Restart your computer to clear the process cache.