Windows 11 24H2 update and Workstation Pro cannot do nested virtualization

[cer113a]

HI

I just have updated windows 11 to 24H2 and after that when i try to launch esxi as a virtual machine in workstation pro 17.6.1 I am getting following error

Virtualized Intel VT-x/EPT is not supported on this platform.

Before upgrade it was working just fine but now with newest update i am no longer able to open ESXi as a virtual machine. I have tried all fixes available on internet but no luck

I am sure that it is Windows 24H2 update. I am not in any rush it is lab environment but just wondering did anyone else had issues

[Xx8leunam9xx]

I have exactly the same error and as you say, I already did everything without any success, I even formatted the computer without success. I think we will have to wait for an update to correct said error.

[Xx8leunam9xx]

Apart from me I also have a group of colleagues with the same problem, they tried everything for more than a week of trying everything without success.

[gbohn]

You may have already checked this out, but did updating to 24H2 enable Hyper-V on the host by any chance (through any of it's many 'security features' getting enabled)? 

That could possibly change you from from running Workstation in 

vmx Monitor Mode: CPL0

to

vmx Monitor Mode: ULM

which would not support "Virtualized Intel VT-x/EPT" if I understand correctly.

Your vmware.log for the guest would tell you which mode you are running in I would think.

[cer113a]

I disabled all these features but will see vmx file and try to change hyper v is disabled but still same thing

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[cer113a]

Yes vmx monitor mode changed to ULM

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[cer113a]

This is exactly what happened I disabled Hyper-V but still the same thing

[cer113a]

it is exactly what happened so what can be done about it or nothing can be done

[gbohn]

I am only running Windows 11 23H2 at the moment (with all of Hyper-V disabled), so I can't address 24H2.

I do remember that (at the time) to get hyper-v disabled I needed to disable all of the various 'Security features' that enable it (like 'core isolation') and after that use the command-line "bcdedit" command (shown in another post of this thread).

I don't know if that will still work with 24H2 or not.

[cer113a]

disabled but still it is running VBS is still running although i disabled it however VBS still showing as running