title: Virtual Box VT-x is not available (VERR_VMX_NO_VMX).. Hyper V and core isolation is disabled
body: <p>I'm running windows 10 enterprise trying to launch a VM in Virtualbox and it fails with the error. 
  "VMMR0_DO_NEM_INIT_VM failed: VERR_NEM_MISSING_KERNEL_API_2 (VERR_NEM_MISSING_KERNEL_API_2).
  VT-x is not available (VERR_VMX_NO_VMX)."</p>
  
  <p><a href="https://i.stack.imgur.com/JfqLs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/JfqLs.png" alt="Vbox Error Outut"></a></p>
  
  <p>I have HyperV disabled in windows features and core isolation turned off
  <a href="https://i.stack.imgur.com/TPLPA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TPLPA.png" alt="Windows settings"></a></p>
  
  <p>I've checked the registry as well and core isolation / memory itegrity is off there.  I've also made sure that in group policy settings that virtualization based security is disabled.</p>
  
  <p>My BIOS does have VT-X /VT-D enabled. </p>
  
  <p>I'm currently on Virtual box 6.1.6 but have tried previous versions back to 6.0.12 with no success. </p>