VT-x is not available caused by Docker for Windows


If you are trying to run Virtualbox on Windows, and received the error ‘VT-x is not available (VERR_VMX_NO_VMX)’. Normally, the first thing is to check if the processor supports VT-x. If yes, then to see whether it has been enabled in BIOS?

vb_error.PNG

If yes, but you are still seeing this error. Then another possible reason is that you are running Docker for Windows on your machine. The new version of docker-machine requires Hyper-V ( it used to be Virtualbox). With Hyper-V feature enabled, the VirtualBox is unable to work properly. So disabling Hyper-V is the fix for this issue. I have tested and worked on my Windows 10.

Docker for Windows actually gives the warning in the dialog box.

docker_error.PNG

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3 thoughts on “VT-x is not available caused by Docker for Windows

  1. I tried to set up Docker on my Windows and gave up. I just tried installing Docker on Ubuntu Server in a Virtualbox. Then just port forward the TCP from VM to Windows.

    Are you using Windows Home Edition?

    1. Windows Home Edition does not have Hyper-V feature which is required by Docker for Windows. You have to use the old ones (docker-machine), as it uses VirtualBox instead of Hyper-V.

      1. I read that I should be using Docker Toolbox. Installed that and it worked. I think. The default vm that it installed on VirtualBox doesn’t seem to play nice as I tried to load Django Docker and have it load on my browser but it seems that there’s no connection. Something for me to Google later.

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