You may find yourself in a situation where you've installed the latest version of Forticlient and you have all the right settings, your username and password is correct but Forticlient still won't connect. If you are running an older version of MacOS you may need to remove the latest client and try installing an older version of Forticlient.
If you run the 'Uninstall Forticlient' program and it gets stuck or does not complete you may need to manually remove the remnants of your current Forticlient installation before you can install a new version.
Open up 'Terminal' from spotlight and enter the following commands pressing enter after each line:
cd / cd Library/LaunchDaemons sudo rm -rf com.fortinet.forticlient.* cd / cd "Library/Application Support/Fortinet" sudo rm -R FortiClient
*Note after typing sudo rm -rf com.fortinet.forticlient.* you will be prompted for your computer's password, it will not show any characters while you type the password, this is normal.
After you've entered the final command reboot your computer and then try running 'Uninstall Forticlient' program again. Once the uninstall completes you should be able to install a different version of Forticlient.