To disable Device Guard or Credential Guard:
Disable the group policy setting that was used to enable Credential Guard.
On the host operating system, click Start > Run, type gpedit.msc, and click Ok. The Local group Policy Editor opens.
Go to Local Computer Policy > Computer Configuration > Administrative Templates > System > Device Guard > Turn on Virtualization Based Security.
Select Disabled.
Go to Control Panel > Uninstall a Program > Turn Windows features on or off to turn off Hyper-V.
Select Do not restart.
Delete the related EFI variables by launching a command prompt on the host machine using an Administrator account and run these commands: