Hyper-V Manager, can't turn off crashed VM while it's in Shutting Down state. Need to kill the process.
While working with Hyper-V Manager and hosting some VM's. While the VM crashes or it's frozen and you try to softly Shut it down. It's stays in this state for long time, and you can't do anything else. Nor interrupt shutting down or Turn the power off. There could be some way to force the Turn Off task while it's frozen.