By default a normal user can abort the shutdown. They could also configure group policy to prevent shutdown permissions which also prevents aborting a shutdown.
The GPO is Computer Configuration > Windows Settings > Security Settings >Local Policies >User Rights Assignment > Shut down the system.
shutdown.exe -a
should take care of situations like that. It’s not an excuse for taking away your options on the UI though.Does that require admin access? It wasn’t their machine, it was one the school provided for the auditorium.
By default a normal user can abort the shutdown. They could also configure group policy to prevent shutdown permissions which also prevents aborting a shutdown.
The GPO is
Computer Configuration > Windows Settings > Security Settings > Local Policies > User Rights Assignment > Shut down the system
.