VirtualBox on Windows 11

By filippo March 13, 2025 Uncategorized No Comments

VirtualBox on Windows 11 will run VMs with the “Green Turtle” icon, at a very reduced speed, unless some steps are made (which may also reduce Windows 11 security).

Having W11 24H2 installed, the following set of actions was necessary.

  1. In Windows features, disable: Containers – Hyper -V – Virtual Machine Platform – Windows Hypervisor – Windows Sandbox – Windows Subsystem for Linux (some were already disabled)
  2. In the “Core Isolation” Settings, disable “Memory Integrity”.
  3. Run in the administrator command prompt:
    bcdedit /set hypervisorlaunchtype off
  4. Download the Device Guard and Credential Guard hardware readiness tool from Microsoft, uncompress the .zip file, open an administrator PowerShell and run from the uncompressed directory:
    .\DG_Readiness_Tool_v3.6.ps1 -Disable
  5. Reboot the PC. You will be asked whether to disable Credential Guard (say NO) and to disable Device Guard (say YES). You’ll lose the ability to log in with the fingerprint or PIN, and you will need the password.

Trying to re-enable the fingerprint log in with the command
Set-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\Lsa" -Name LsaCfgFlags -Value 1"
did not work.

Sources:

https://www.youtube.com/watch?v=cTyjXy26mqs

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