What is wrong with this Windows shutdown command?

Solution 1:

You are using conflicting switches.

• /p – Turn off the local computer with no time-out or warning. Can be used with the /f option.

• /t – Set the time-out period before shutdown to xxx seconds.

You are telling it to shutdown now with /p and shutdown in 120 seconds with /t.

Solution 2:

You should use

shutdown /f /t 120

Parameters /p and /t are incompatible.

Check Windows 7 shutdown command syntax for other parameters and more info.

Solution 3:

Depending on what you are trying to achieve, you might want to try

shutdown -s -f -t 120

This will force close all running programs and shut your computer down after 120 seconds.