Error: VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED) [duplicate]

Answer 1

In my case, I had 4GB of ram for the Virtual Machine (my host machine has 8GB of ram, and I was getting that error. I've change the ram amount to 2GB ram and my Virtual Machine booted perfectly. However, I had already enabled virtualisation on my BIOS settings.

Answer 2

I ran into this issue with both of my ThinkPads (T450s and X1 Carbon), but this probably applies to other machines with Intel hardware.

One solution is to enable virtualization options in the BIOS of the host machine (not the guest VM).

1. Reboot and enter the BIOS (F12 usually)
2. Navigate to the virtualization settings. The exact menu navigation may vary based on your particular BIOS and version. For me it was Security -> Virtualization.
3. In my case there were two options, both of which were disabled:
   • Intel (R) Virtualization Technology
   • Intel (R) VT-d Feature
4. Enable both options
5. Save and exit (reboot)

This resolved the issue for me.

Answer 3

I have faced the same issue with Ubuntu 16.04 (xenial) at Dell Latitude E6500.

First I have updated the VB and my symptom changed. There was no option to create x64 machine at all and a user friendly message box while trying to deploy an old one.

I have found a similar story described here. And this link brought me there to the final solution.

In short words, for Dell BIOS you need to keep

Performance -> Trusted Execution = OFF

Answer 4

I solved the problem by reducing the memory size in settings-> system