Shutdown accepted the following commands:
shutdown.exe 1 -- Shut down Windows safely, flushing all file buffers to disk and stopping all running processes
shutdown.exe 2 -- Log off the current user
shutdown.exe 3 -- Shut down and power off (required hardware support)
shutdown.exe 4 -- Shut down and restart the computer
Adding FORCE after the command number forced applications to close immediately without prompting the user.