February 5, 2018

VirtualBox crashing on Windows 10 and how to resolve it

How to resolve the problem of VirtualBox blue screening on Windows 10

VirtualBox crashing on Windows 10 and how to resolve it

Due to a security feature in Windows 10, Oracle's VirtualBox will now blue screen a Windows 10 PC whenever you try start a VM in VirtualBox. The bluescreen error is vt-x is not available.

There are two possible ways to resolve the error until Microsoft comes up with a permanent fix.

  1. Install the Device Guard and Credential Guard hardware readiness tool available from Microsoft at: Device Guard and Credential Guard hardware readiness tool. However, this fixs only works for a month until the monthly security patches are released in which case you have to run the tool again.

  2. The other option is to uninstall the Hyper-V Windows Feature from the Control Panel.

The VirtualBox team is aware of the problem and has a ticket open for it Ticket 16801 However, the ticket has been open since May 2018 and the general concensus is that Windows can only have one Hypervisor running at a time and the problem should be resolved by Microsoft and not Oracle/VirtualBox team.