Vagrant up - VBoxManage.exe error: VT-x is not available (VERR_VMX_NO_VMX) code E_FAIL (0x80004005) gui headless [closed]

Answer 1

This is what helped me:

1. Remove Hyper-V and install Hypervisor platform.

   • In the elevated Powershell prompt do:

     Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All
     Enable-WindowsOptionalFeature -Online -FeatureName HypervisorPlatform
     

   • Restart

2. Disable Windows Defender Credential Guard

   • "Local Group Policy Editor" → "Computer Configuration" → "Administrative Templates" → "System" → "Device Guard" → "Turn on Virtualization Based Security" → Set to "Disabled"

   • Delete the following registry settings:

     • HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\LSA\LsaCfgFlags
     • HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\DeviceGuard\LsaCfgFlags

   • Restart

3. Delete the Windows Defender Credential Guard EFI variables

   • In the elevated command prompt do:

     mountvol X: /s
     copy %WINDIR%\System32\SecConfig.efi X:\EFI\Microsoft\Boot\SecConfig.efi /Y
     bcdedit /create {0cb3b571-2f2e-4343-a879-d86a476d7215} /d "DebugTool" /application osloader
     bcdedit /set {0cb3b571-2f2e-4343-a879-d86a476d7215} path "\EFI\Microsoft\Boot\SecConfig.efi"
     bcdedit /set {bootmgr} bootsequence {0cb3b571-2f2e-4343-a879-d86a476d7215}
     bcdedit /set {0cb3b571-2f2e-4343-a879-d86a476d7215} loadoptions DISABLE-LSA-ISO
     bcdedit /set {0cb3b571-2f2e-4343-a879-d86a476d7215} device partition=X:
     mountvol X: /d
     

   • Restart

4. Disable virtualization-based security

   • Delete all registry keys under HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\DeviceGuard\* (but keep DeviceGuard itself).

   • Restart

See also: Disable Windows Defender Credential Guard