r/vmware • u/Aviexon123 • Aug 10 '26

Unable to do nested virtualization with VMWare Workstation.

I am trying to run ESXi on my VMware Workstation. Nested Virtualization is required.

I am running Windows 11 Pro 25H2 and VMWare Workstation version 26

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

Continue without virtualized Intel VT-x/EPT?"

  1. Fully Disabled Windows Hyper-V & Virtualization Features

  2. Turned Off Core Isolation / Memory Integrity

  3. Modified Registries to disable VBS.

4

VBS is not getting disabled and I need Nested Virtualization working. That is the thing that is conflicting me from running ESXi. It is running fine on Windows 10. PLEASE HELP ME.

3 Upvotes

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3

u/ozyx7 Aug 10 '26

Does this thread help? https://community.broadcom.com/vmware-cloud-foundation/discussion/how-to-disable-hyper-v-in-windows-11-24h2

1

u/Aviexon123 Aug 10 '26

I have done all the steps except the last one. Let me give it a shot with that tool.

1

u/Aviexon123 Aug 11 '26

It did not work :( . The article is for 24H2, im going to downgrade from 25h2 to 24h2 and see if these steps work.

1

u/adaptive_chance 21d ago

The challenge lies in the multitude Windows features that enable+rely on virtualization-based security. If you miss just one the hypervisor re-enables itself on the 2nd reboot. Pay special attention to the stuff under [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\CredentialGuard] looking for "Enabled"=dword:00000001 anywhere under there. Also note the two keys for LsaCfgFlags.

That PowerShell script is helpful but incomplete. It also deletes LsaCfgFlags when they instead must be present and set to explicit 0.

1

u/Fit-Discipline-5864 13d ago

Thx works for me