Windows VMs boot failure with UNSUPPORTED_PROCESSOR

Solution Verified - Updated -

Issue

  • After June 2025 Windows Updates, a Windows Server 2025 VM and Windows 11 Desktop VM running on OpenShift Virtualization fails to boot with a Blue Screen STOP error noting an UNSUPPORTED_PROCESSOR exception code.

Environment

  • OpenShift Virtualization
  • Microsoft Windows Server 2025
  • Microsoft Windows 11 Desktop
  • AMD CPU

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