I’m stuck on a corporate Windows 11 Pro machine where TwinCAT 3 (Build 4026, XAE Shell) refuses to enter Configuration (🔧) or Simulation mode. The real-time start diagnostic always reports:

“Setting TwinCAT in Run Mode inside Hyper-V is not possible. Virtualization-based Security (VBS) is active on your system.”

Yet I have already disabled every obvious virtualization feature:

1. Windows Features

   • Hyper-V (Platform & Management Tools)

   • Virtual Machine Platform

   • Windows Hypervisor Platform

   • Windows Sandbox

   • Windows Subsystem for Linux (WSL2)

   • Containers

2. Core Isolation (VBS)

   • Memory Integrity set to Off under Windows Security → Device security → Core isolation details 

     for the PowerShell part (Admin) I tried 

      

     Disable-WindowsOptionalFeature -Online `
     -FeatureName Microsoft-Hyper-V-All,VirtualMachinePlatform,WindowsHypervisorPlatform,WindowsSandbox,Microsoft-Windows-Subsystem-Linux

     bcdedit /set hypervisorlaunchtype off


     Rebooted twice

     • Services & msconfig

       • No Hyper-V, VM or Container services listed or running

       • TwinCAT 3 still shows "Contact your IT-departement to disable Virtualization based security and remove hyper-v"

     What “hidden” hypervisor component could still be active on Windows 11 after disabling all those features?
     are there specific keys or drivers I should look for and remove ?