virtualbox.org

I have an Ubunutu (20.04) virtualbox vm (6.1.26) that was shutdown with its current state changed.

Now whenever I try to start the machine, or recover any past versions of the machine, I get a critical error from the guru mediation. I am attaching the logs of the machine at shutdown.

Any advice would be appreciated!

The actual problem the guru meditated over is not logged. The VM was started from a saved state.

Hyper-V is enabled on the host. See HMR3Init: Attempting fall back to NEM (Hyper-V is active).
If Hyper-V was disabled before but has been enabled now, the saved state may not be valid anymore.

If disabling Hyper-V does not get the VM going, you may have to discard the saved state: right-click the VM in the list and click Discard Saved State. The VM's unsaved data will be lost.

You may find that the VM will boot and shut down faster than it will save state, so saving state may not be necessary for your workflow. And since saved states could be corrupted, you might consider whether you really need to keep using saved state.