[Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Discussions related to using VirtualBox on Windows hosts.

[Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby davide.cossano » 14. Sep 2017, 15:52

Hello,
i use VirtualBox from a lot of year.
Tomorrow windows 10 get the last update (Version 10.0.15063) and after it mi windows Xp Vm doesn't start any more

When Virtual box give VERR_VMX_NO_VMX error tipically the virtual-t in bios isn't active.
In may case nothing is changed, only windows make an update.

I already try to unistall and install Virtual Box, but nothing chage.
I already try to stop all services where hyper-v is named.

I finish the idea. I already search this error on the comunity, but i have not find a right solution for my problem.

Sameone has already fixed my problem?
Thanks you for support.
Best regards
Davide Cossano.
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Re: VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby mpack » 14. Sep 2017, 16:35

Disable Hyper-v, per all the previous discussions of this problem.
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Re: VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby davide.cossano » 14. Sep 2017, 17:16

I had already stopped all services about hyper-v
i tryed to unistall hyper-v from windows component
but wasn't enought...

I solved using this command from console:

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

Thanks you for you support.
Regards
Davide.
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Re: VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby mpack » 14. Sep 2017, 17:39

Thanks for reporting back.
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Re: [Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby RBStorms » 1. Dec 2017, 23:57

This appears to be happening again due to Microsoft issuing an update on the normal Windows 10 release track. They are enabling Hyper-v to one of their security issues.

Just thought I'd mention this, since mpack gets tired of regurgitating the same thing, over and over. :)

I KNOW I turned OFF Hyper-v when installing VirtualBox. It WAS working fine, and then MS Updates happened. Suddenly Hyper-v was back on, and VBox failed to open my XP VM.

Lesson learned: Check that Hyper-v is not enabled, even if you know you have previously disabled it. M$ is turning it back on for you.

Thank You for your support!
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Re: [Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby georgn » 23. Jan 2018, 00:43

It seems to be back and disabling Hyper-V is no longer the solution...

I recently updated Windows to Build 17074.rs_prelrease.180106-2256 and now I find that my vbox linux vm no longer starts up with:

Code: Select all   Expand viewCollapse view
VT-x is not available (VERR_VMX_NO_VMX).


Result Code:
E_FAIL (0x80004005)
Component:
ConsoleWrap
Interface:
IConsole {872da645-4a9b-1727-bee2-5585105b9eed}


I have double checked that Hyper-V is not enabled. I have checked that the BIOS settings have not changed (vt-x is enabled).

Any other hints are welcome.
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Re: [Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby BillG » 23. Jan 2018, 06:36

You can expect to see odd things happen when you run pre-release versions of the OS on the host.
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Re: [Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby socratis » 23. Jan 2018, 10:31

@georgn
BillG is absolutely correct, there is a special forum for discussions like these: Windows pre-releases. Just so that you know, you're not alone. A couple more users have reported the exact same issue. If you want you could continue the conversation in that thread.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
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Re: [Solved] VT-x is not available (VERR_VMX_NO_VMX) After Windows 10 Update

Postby georgn » 23. Jan 2018, 17:13

Awesome! Thanks! Heading over to the other forum.
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