Cause: Self-protection enabled or insufficient privileges.
Fix: Run from Safe Mode, or use PsExec from Sysinternals to run as SYSTEM:
psexec -i -s cmd.exe
Then run fcremove.exe.
Follow the Command Line Options (Optional): forticlient fcremove.exe
Execute the Removal: Once you run the command, the utility will start removing FortiClient. This process might take a few moments.
Reboot Your Computer (If Required): After the removal process completes, you might be prompted to reboot your computer. It's a good practice to restart to ensure all components are completely removed. Cause: Self-protection enabled or insufficient privileges
Verification:
If you have ever tried to uninstall FortiClient via the standard Windows "Add or Remove Programs" method, you know it rarely goes smoothly. You might encounter "Uninstall Failed" errors, or the uninstaller might simply grey out options, leaving you stuck with a partial installation that blocks re-installation. Then run fcremove
This is where fcremove.exe comes in. It is the official Fortinet command-line cleanup tool designed to force a removal of the FortiClient endpoint.
Here is a guide on how to use it safely.
fcremove.exe
Runs a standard removal. It may prompt for confirmation. In many versions, this performs a "normal" uninstall similar to Control Panel but more thorough.