My host computer is running Windows 10, and my guest is Ubuntu in VirtualBox. I am trying to run a 3rd VM on the Ubuntu, but VirtualBox says:
Failed to open a session for the virtual machine Windows XP. VT-x is not available. (VERR_VMX_NO_VMX).
It also returned an error code of 0x80004005
I have virtualization enabled, of course. It's not even an option to turn off in my BIOS (MSI z170a). My machine is very high end, so I know it can run it, I've ruled out everything I can.