virtualbox.org

I got this VM set up and working a week ago, just booted it up and tested that it works and didn't use it since, but now when I try to boot it I get a popup saying "A critical error has occurred while running the virtual machine and the machine execution has been stopped". I'm not sure what would have changed to cause this problem as I haven't used it at all or touched the settings. VBox.log and VBox.png attached.

Hyper-V is enabled. See HMR3Init: Attempting fall back to NEM (Hyper-V is active).

Thank you. Disabling Hyper-V fixed it.