hyper-vvirtual machinevirtualboxvirtualizationwindows 10
Tried to start my virtual machine on VirtualBox after a normal update on windows 10. But getting the issue
VT-x is not available (VERR_VMX_NO_VMX)
Before the update everything was working fine. Searching for the issue tells to enable virtualization in BIOS which I have checked is enabled.
Virtualization in BIOS
Hyper-V in Control Panel
Solutions I have tried
dism.exe /Online /Disable-Feature:Microsoft-Hyper-V-All following a reboot. but doesn't work.Try :
To ensure Hyper-V is totally disabled, enter in elevated Command Prompt:
bcdedit /set hypervisorlaunchtype off
Run gpedit.msc and go to
Local Computer Policy > Computer Configuration > Administrative Templates > System > Device Guard > Turn on Virtualization Based Security, and set to Disabled.
Do the same for CredentialGuard.
Check Windows Defender Security Center > Device Security > Core Isolation Details, that it is turned off.
I have figured it out after giving my whole Day. There are other settings too in windows which needs to be figured out when working with VM. We need to disable Windows Hypervisor Platform and Virtual Machine Platform along with Hyper-V.
Since I have installed docker desktop on windows due to which these setting are enabled. Also you need to restart after changing these settings.
Best Answer
Windows 10 Core isolation memory might be activated. This is stealing VT-x !
To see if it is activated check this:
Check Windows Defender
If you have this activated, deactivate it by setting the following registry key to 0
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity\Enabled