Docker + Virtual Box = VT-x is not available (VERR_VMX_NO_VMX)

Question

I installed docker. During installation, it complained that you can't have two virtualization environments, and that it would make docker the primary one. I said: "OK."

Now, I need to go back to enabling virtualbox. I uninstalled Docker, hoping it would put things back the way they were, but: no joy.

How do I re-enable virtualization for VirtualBox now that docker is gone?

Note: Virtualization bit is set / enabled on the chip.

OS: Win10 Enterprise.

Answer 1

Virtualbox will get upset and not run if Microsoft Hyper-V is enabled.

Here's the solution:

1. Open command prompt as administrator
   • search for 'command'
   • right-click then select 'run as administrator'

2. paste the following command:

   dism.exe /Online /Disable-Feature:Microsoft-Hyper-V 

3. Then reboot.

Answer 2

To complete @DrDamnit answer, it is also possible to disable Microsoft Hyper-V from the menu.

1. Search for "Turn Windows features on" on the start menu

2. Disable Hyper-V

3. Reboot your computer

Voilà