While I was starting my vm I got this error
Microsoft Emulated IDE Controller Error(Instance ID
83F863B-8DCA-9EDA-2CA8B33039B4): Failed to Power on with Error 'The
process cannot access the file because it is being used by another
process .'.
What's wrong with it?
Best Answer
It's also possible for Windows to lock a VHD file. I ran into this by double-clicking on a VHD, which causes recent version of Windows to open it up like a folder. However, it appears that the system then holds a lock on the file, which prevents Hyper-V from using it to start a VM. Rebooting fixed that problem.