VERR_VMX_MSR_VMXON_DISABLED when starting an image from Oracle virtual box

Question

I\'m getting this error while loading a Puppet image from a Oracle virtual box. How can I fix it?

Failed to open a session for the virtual machine learn-puppet-c         


        

Answer 1

I have "Intel Virtualization" set to enabled in my BIOS, and I still get this error.

It turns out the problem is that I had Hyper-V enabled in "Windows Features", and apparently VirtualBox and Hyper-V don't play nicely together.

I went to Control Panel -> Windows Features and unchecked Hyper-V. After a reboot, Hyper-V was gone, and I was now able to run my 64-bit VMs again in VirtualBox.