VT-x is not available (VERR_VMX_NO_VMX) on VirtualBox after Windows 10 Update

So in the mist of writing my “RMAN Back to Basics” series, I got the following error when trying to start my Virtual Machine in Oracle’s VirtualBox:
VirtualBox_VERR_VMX_NO_VMX

“Failed to open a session for the virtual machine dc1sbxdb001

VT-x is not available (VERR_VMX_NO_VMX).
Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}”

I was like, “How’s this possible?  I only just used my Virtual Machines yesterday!“.

Then I remembered Windows 10 had advised me it wanted to restart my laptop for some Windows Updates.  Probably something my work had pushed out.  So at the end of the day, I did “Update and restart” and it did take some time and several restarts.  Then I shutdown my laptop for the day.

After some googling, it seemed it was to do with Microsoft Hyper-V, so I followed my own instructions from my blog post:
Disabling Microsoft’s Hyper-V to use Oracle’s VirtualBox

And “Voilà” after a reboot my Virtual Machine started back up, so I could continue my blog series 🙂

Seems like in one of the Windows Update, Microsoft had decided to re-enable Hyper-V which I had previous had off on boot.

 

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Thanks

Zed DBA (Zahid Anwar)

Install Oracle’s VirtualBox

If you don’t have the luxury of having a server readily available but you want to do some research and development or training on Oracle, then Oracle’s VirtualBox is a perfect solution.

Prerequisites

To be able to use VirtualBox, you need to disable Hyper-V as it blocks all other Hyper Visors from calling VT hardware.  See my post blog on how to do this:
Disabling Microsoft’s Hyper-V to use Oracle’s VirtualBox

Download

You can download the latest VirtualBox from:
https://www.virtualbox.org/
https://www.virtualbox.org/wiki/Downloads

At the time of writing this blog, the latest is:
http://download.virtualbox.org/virtualbox/5.1.28/VirtualBox-5.1.28-117968-Win.exe

Install VirtualBox

To install, launch the VirtualBox executable i.e. VirtualBox-5.1.28-117968-Win.exe with a user with admin rights:

VirtualBox_Install_Step1

Click ‘Next‘.

VirtualBox_Install_Step2

Click ‘Next‘.

VirtualBox_Install_Step3

Change options as you wish, otherwise click ‘Next‘.

VirtualBox_Install_Step4

Accept the warning and click ‘Yes‘.

VirtualBox_Install_Step5

Click ‘Install‘.

VirtualBox_Install_Step6

You will see the progress, wait until you see the following:

VirtualBox_Install_Step7

Click ‘Install‘.

VirtualBox_Install_Step8

Once finished, click ‘Finish‘ and VirtualBox will load:

VirtualBox_Install_Step9

If you found this blog post useful, please like as well as follow me through my various Social Media avenues available on the sidebar and/or subscribe to this oracle blog via WordPress/e-mail.

Thanks

Zed DBA (Zahid Anwar)

Disabling Microsoft’s Hyper-V to use Oracle’s VirtualBox

If you want to use Oracle’s VirtualBox on Windows 10, you first need to disable Microsoft’s Hyper-V.  I’ve used VirtualBox many times in the past but on the likes of Windows 7, where Hyper-V isn’t installed by default as part of the O/S.  It seems on Windows 10 Enterprise, Hyper-V is installed by default and is started as part of the bootup.

Hyper-V blocks all other Hyper Visors like VirtualBox from calling VT hardware, therefore it’s required for it to be disabled.

To check

Run ‘bcdedit’ in Command Prompt as Admin:

C:\Users\anwarz>bcdedit

Windows Boot Manager
--------------------
identifier {bootmgr}
device partition=\Device\HarddiskVolume2
path \EFI\Microsoft\Boot\bootmgfw.efi
description Windows Boot Manager
locale en-GB
inherit {globalsettings}
badmemoryaccess Yes
isolatedcontext Yes
default {current}
resumeobject {a14884a8-6117-11e7-a334-f430b9153789}
displayorder {current}
toolsdisplayorder {memdiag}
timeout 30

Windows Boot Loader
-------------------
identifier {current}
device partition=C:
path \WINDOWS\system32\winload.efi
description Windows 10
locale en-GB
inherit {bootloadersettings}
recoverysequence {a14884aa-6117-11e7-a334-f430b9153789}
displaymessageoverride Recovery
recoveryenabled Yes
badmemoryaccess Yes
isolatedcontext Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \WINDOWS
resumeobject {a14884a8-6117-11e7-a334-f430b9153789}
nx OptIn
bootmenupolicy Standard
hypervisorlaunchtype Auto

C:\Users\anwarz>

You’ll see it say ‘Auto‘ for hypervisorlaunchtype, this means it was enabled to load at boot.  So if this option wasn’t changed since last boot, then Hyper-V is enabled.

To Disable

Run the following command in Command Prompt as Admin:

C:\Users\anwarz>bcdedit /set hypervisorlaunchtype off
The operation completed successfully.

C:\Users\anwarz>bcdedit

Windows Boot Manager
--------------------
identifier {bootmgr}
device partition=\Device\HarddiskVolume2
path \EFI\Microsoft\Boot\bootmgfw.efi
description Windows Boot Manager
locale en-GB
inherit {globalsettings}
badmemoryaccess Yes
isolatedcontext Yes
default {current}
resumeobject {a14884a8-6117-11e7-a334-f430b9153789}
displayorder {current}
toolsdisplayorder {memdiag}
timeout 30

Windows Boot Loader
-------------------
identifier {current}
device partition=C:
path \WINDOWS\system32\winload.efi
description Windows 10
locale en-GB
inherit {bootloadersettings}
recoverysequence {a14884aa-6117-11e7-a334-f430b9153789}
displaymessageoverride Recovery
recoveryenabled Yes
badmemoryaccess Yes
isolatedcontext Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \WINDOWS
resumeobject {a14884a8-6117-11e7-a334-f430b9153789}
nx OptIn
bootmenupolicy Standard
hypervisorlaunchtype Off

C:\Users\anwarz>

You’ll see it say ‘Off‘ for hypervisorlaunchtype, this means it is now disabled to load at boot.  However, the current boot had this enabled and therefore requires you to reboot to not have Hyper-V loaded.

To Enable

Run the following command in Command Prompt as Admin:

C:\Users\anwarz>bcdedit /set hypervisorlaunchtype auto
The operation completed successfully.

C:\Users\anwarz>bcdedit

Windows Boot Manager
--------------------
identifier {bootmgr}
device partition=\Device\HarddiskVolume2
path \EFI\Microsoft\Boot\bootmgfw.efi
description Windows Boot Manager
locale en-GB
inherit {globalsettings}
badmemoryaccess Yes
isolatedcontext Yes
default {current}
resumeobject {a14884a8-6117-11e7-a334-f430b9153789}
displayorder {current}
toolsdisplayorder {memdiag}
timeout 30

Windows Boot Loader
-------------------
identifier {current}
device partition=C:
path \WINDOWS\system32\winload.efi
description Windows 10
locale en-GB
inherit {bootloadersettings}
recoverysequence {a14884aa-6117-11e7-a334-f430b9153789}
displaymessageoverride Recovery
recoveryenabled Yes
badmemoryaccess Yes
isolatedcontext Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \WINDOWS
resumeobject {a14884a8-6117-11e7-a334-f430b9153789}
nx OptIn
bootmenupolicy Standard
hypervisorlaunchtype Auto

C:\Users\anwarz>

You’ll see it say ‘Auto‘ for hypervisorlaunchtype, this means it is now enabled to load at boot.  However, the current boot had this disabled and therefore requires you to reboot to have Hyper-V loaded.

Just a note, I’ve not got anything against Hyper-V, we use it quite frequently, it’s stable, however in this instance, I want to use VirtualBox which I am more accustomed for certain features 🙂

Related Blog Posts

Install Oracle’s VirtualBox

If you found this blog post useful, please like as well as follow me through my various Social Media avenues available on the sidebar and/or subscribe to this oracle blog via WordPress/e-mail.

Thanks

Zed DBA (Zahid Anwar)