If you manage devices over the network, you probably use a remote connection and the Start menu power options, or call someone to execute to perform shutdowns or restarts manually. However, Windows 10 ...
That does sound sort of odd -- maybe you typed it into a Windows command prompt by mistake (not sure if Windows even supports a shutdown command)? In any case, you do need to be the superuser ...
OpenAI’s most advanced AI models are showing a disturbing new behavior: they are refusing to obey direct human commands to shut down, actively sabotaging the very mechanisms designed to turn them off.