Disable Hyper-V to use VirtualBox on Windows

Turn Hyper-V off

To disable Hyper-V in order to use VirtualBox, open a command prompt as Administrator and run the command:

bcdedit /set hypervisorlaunchtype off

After a reboot, you'll be able to run VirtualBox.

Turn Hyper-V back on

To turn Hyper-V back on, run this command and reboot:

bcdedit /set hypervisorlaunchtype auto