Windows Guest with VBS and IOMMU enabled fails to boot

Solution Verified - Updated -

Issue

  • Windows Guest with Virtualization Based Security (VBS) and IOMMU does not boot.
  • Guest is stuck in the TianoCore boot screen

Environment

  • Red Hat Enterprise Linux 9, 10
  • KVM Virtualization
  • Microsoft Windows 2025 and 11 Guest OS
    • IOMMU
    • Virtualization Based Security (VBS)

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