Error: VT-x is disabled in the BIOS for all CPU mo

Question

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• VT-x is disabled in the BIOS for both all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED) 11 answers

I have installed Oracle VM VirtualBox 5.0.12, and now trying to start it up.

But shortly after trying to power it up, I get an error message saying:

VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED)

Have other readers experienced the same issue and resolved it successfully? Please let me know. I have checked out other threads on Stackoverflow which report the same error message, and tried out the suggestions mentioned there, but none of them is working for me.

If it would help, I am running Windows 7 Enterprise edition SP1 64 bit.

Does anyone have an idea what the problem could be?

Answer 1

Non of the solutions worked for me. Instead, I tried the following:

System -> Acceleration -> Uncheck Enable VT-x/AMD-V

Answer 2

changing the ram did not work for me so i found another solution

on virtualbox navigate to Settings -> System -> Processor and then click on (Enable PAE/NX). this solved my problem.

Answer 3

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

Answer 4

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