VT-x is not available

[Harvey13]

Hello
I run VirtualBox 5.2 on Windows 10

• Virtualization is enabled in the BIOS
  Hyper V is not activated

But When I want to run a machine, I got the error :

Échec de l'ouverture de session pour la machine virtuelle MSEdge - Win10.
VT-x is not available (VERR_VMX_NO_VMX).
Code d'erreur : E_FAIL (0x80004005)
Composant : ConsoleWrap
Interface : IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Former uses with W7 were correct...
I do not really understand what's wrong ?

[mpack]

Please read FAQ: I have a 64bit host, but can't install 64bit guests., it covers the same territory.

[Harvey13]

Hello mpack
If I correctly read the link, there is only the step 4 which seems to be the problem.

When creating a VM, make sure you choose the 64-bit version of the guest OS template in <VM Settings> | General | Basic | Version

I tried with Ubuntu and a version of MSEdge-Win10.vmdk, and both let me only choose 32 bit version in General | Basic | Version...
No way to choose 64 bits version.

Is there a settings to allow this ?
Best Regards

[mpack]

Please address every step of the faq. The symptom you describe means that VT-x is not available, meaning you have not addressed steps 1-3.

[Harvey13]

Hello
In the BIOS Virtualization is enabled:
[img]https://www.dropbox.com/s/d3rs8y8iwx4rg ... n.jpg?dl=0[/img]
[img]https://www.dropbox.com/s/0oys937k45n4vq3/vtio.jpg?dl=0[/img]

The Hyper V is not activated
[img]https://www.dropbox.com/s/jinkf1eb3cxml ... V.PNG?dl=0[/img]

I have Microsoft Windows 10 Entreprise [version 10.0.14393 N/A version 14393]
on a x64-based PC : Precision Tower 3620 : Intel64 Family 6 Model 94 Stepping 3 GenuineIntel ~2900 MHz

May be I misunderstood the 3 first steps ...

Best Regards

[andyp73]

If the virtualisation is enabled in the BIOS and Hyper-V is not activated then you need to look at some of the other suggestions in the linked document. Anti-virus products, Avast is one culprit, have started using the virtualisation features of the processor and don't always tell you.

The FAQ is for guidance, you have to do a bit of digging around on your system, as it is front of you not us, and use the principals it gives.

-Andy.

[Harvey13]

Ok thanks for help
I will continue searching...

[Jarvis-907]

This problem developed on my system after updating Win 10 to Version 1803

Tried changing BIOS as others suggested - with no success

Looked at oracle VM VirtualBox Manager to see if I could build a new machine and noted that it would only allow me to build a 32 bit machine.
The Virtual PC I had was 64-bit.

Opened Win 10 System configuation by typing "System Config" in the Search box
- Select Boot Tab
- click Advanced Options
- look at "Number of Processors"
- if number of processors = 1 then UN-Check the box
- reboot your PC
- Navigate back to "System Configuration" as above and get back to "Number of Processors" on the "Boot" Tab
- you should now be able to change the number of processors.
- you can do two different things ... either leave the "Number of Processors" Un-selected OR Select the box and choose the number of Processors you wish to enable (MUST be Greater than 1)
-Reboot PC
-Try restarting Virtual-PC; if "VT-x is not available" persists then do the following:
- Open System Config App again
- Select "General" Tab
- Select "Normal startup"
- Reboot PC
- Try loading Virtualbox PC
Hope this works for you as well as it worked for me.