I applied an update to a virtual server sitting on Microsoft’s Hyper-V and rebooted it, but it didn’t come back up.  When I tried to start the virtual machine I received the error “Microsoft Emulated IDE Controller (Instance ID {GUID}): Failed to power on with Error ‘General access denied error'”.  The fix was to remove the hard drive from the virtual machine and re-add it.  What is up with that?!?