No other explanations, just total system freeze. No mouse or keyboard input. I can navigate back to macOS but even that is frozen. Only started happening after I upgraded to PD 12(running W10 Pro VM).
I have encountered the same thing several times since upgrading to PD12 too. I am using a mid-2010 MacBook Pro on macOS Sierra v10.12.2. My VM is Windows 7 Ultra 64-bit. Sometimes I have to power down my Mac to get out of the lock-up state. Other times I can do a "Force Quit" on PD12 from the Mac OS.
Hi guys, could you please provide us with the screenshot of the Activity monitor, once you start the Parallels Desktop and VM.