Vagrant up - VBoxManage.exe error: VT-x is not available (VERR_VMX_NO_VMX) code E_FAIL (0x80004005) gui headless [closed]

Answer 1

Besides turning on virtualization features of the processor and turning off Hyper-V, here's another thing, related to Windows' Virtualization-Based Security features:

https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/oem-vbs

VBS (and the associated security features) must be disabled to avoid conflicting hypervisors. Here is a solution from VMware, which also seems valid for the VirtualBox issue":

https://kb.vmware.com/s/article/2146361

Answer 2

If the Docker is installed and up and running at the same time, if you are trying to run Virtual Box it will not work. The underlying kernel on host machine which is present on your laptop will not allow to work both things at the same time.

Hence Docker and Virtual box can't run at the same time. for that,

1. To use Docker you have to enable the hyper-v which is present on this location

   Control Panel -> Program And Features -> Turn Windows Features on or off.

2. To run Virtual box you have to disable the hyper-v from above location.

Answer 3

I just solved this problem by disabling(uncheck) Hyper-V. Seems Hyper-V was enabled when I installed Docker

Control Panel -> Program And Features -> Turn Windows Features on or off.

You may need to reboot afterwords.

Warning: Vagrant with VirtualBox cannot work with Docker at the same time.

Answer 4

Turn Off the Hyper-V option from the windows feature list. You can find this on control panel.

Answer 5

Tried all above steps but nothing was working till I enabled Virtualization Technology in BIOS. Even though Intel CPU Utility was showing Virtualization as Ticked, it really wasn't.

Had boot-up system, entered BIOS, Enabled Virtualization, Restarted and Voila! It worked after more than 4 hours of efforts.

Answer 6

Docker can be the culprit. I had same issue after installing docker. Docker uses Windows hyper-v driver to create containers. Hence Docker and Virtual Box may not work together!