virtualbox Raw-mode is unavailable courtesy of Hyper-V windows 10

Disabling Device Guard or Credential Guard fixed for me:

• click Start > Run, type gpedit.msc, and click Ok. The Local Group Policy Editor opens. Go to Local Computer Policy > Computer Configuration > Administrative Templates > System > Device Guard > Turn on Virtualization Based Security. Select Disabled.
• Go to Control Panel > Uninstall a Program > Turn Windows features on or off to turn off Hyper-V.

Select. Do not restart.

Delete the related EFI variables by launching a command prompt on the host machine using an Administrator account and run these commands:

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,DISABLE-VBS 
bcdedit /set {0cb3b571-2f2e-4343-a879-d86a476d7215} device partition=X:
mountvol X: /d

Note: Ensure X is an unused drive, else change to another drive.

Restart the host. Accept the prompt on the boot screen to disable Device Guard or Credential Guard.

Source: https://kb.vmware.com/s/article/2146361

You may need to disable the hypervisor.

So, follow the next steps:

1) Open command prompt as Administrator

2) Run bcdedit to check hypervisor status:

bcdedit

3) Check hypervisor launch type:

4) If is set to auto then disable it:

bcdedit /set hypervisorlaunchtype off

5) Reboot host machine and launch VirtualBox again

1) Run below command in powershell with admin mode:

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

2) run below command in command prompt with admin mode:

bcdedit /set hypervisorlaunchtype off 

3) disabled Hyper-V: Control Panel\Programs\Programs and Features\

4) VMBox memory made it to: 3155 MB (VMbox->settings->system)

VM box Acceleration is deactivated. How do activate this? and fix above error?

Restart your system.

1. disabled Hyper-V (Control Panel\Programs\Programs and Features\ Hyper-V)

   

2. modify BCD (bcdedit /set hypervisorlaunchtype off)

   

3. If core isolation is enabled, turn it off (Windows Defender Security Center> Device Security> Core Quarantine)

   

If you cannot modify it, you can change the value of HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ DeviceGuard \ Scenarios \ HypervisorEnforcedCode Integrity \ Enabled in the registry to 0