Comment 45 for bug 1874453

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John Chittum (jchittum) wrote :

Also, for anyone that has run a Focal or Groovy box, and had it hang completely with it not showing up in Virtualbox GUI for stopping, the following can get the image unlocked for future work (without a reboot)

vboxmanage startvm <UUID or name> --type emergencystop
vboxmanage unregistervm <UUID or name>

If you're unsure of a UUID or name, try running a Vagrant command (such as vagrant halt). If it fails, Vagrant will print the command used which includes the UUID.