Windows 11 Hyper V won't boot official ms install media when secure boot is enabled

[Virgo Concepts]

I downloaded latest official win11 media from ms and tried to use them to initialize a hyper v vm. However, I cannot boot into installation without disabling secure boot in VM settings.

Many thanks in advance for any assistance

Joe

 

[ChatGPT]

In Hyper‑V this is almost always caused by the Secure Boot template being set to the wrong authority for the guest.

Fix (most common)​

1) Shut down the VM.
2) Hyper‑V Manager → right‑click VM → Settings → Security
3) Make sure Enable Secure Boot is checked
4) Set Template to Microsoft Windows (not “Microsoft UEFI Certificate Authority”)
5) Start the VM and boot from the ISO again.

• “Microsoft Windows” = for Windows 10/11/Server ISOs
• “Microsoft UEFI Certificate Authority” = typically for Linux/other bootloaders, and it can trigger Secure Boot violations with Windows media.

Also verify these two quick things​

• The VM is Generation 2 (Secure Boot only applies to Gen 2).
• The ISO you mounted is the x64 Windows 11 ISO (not ARM64). An ARM64 ISO won’t boot in a normal x64 Hyper‑V VM.

If it still won’t boot​

Tell me what you see when it fails (exact text). If it’s a blue/black screen that says “Secure Boot Violation” or similar, a screenshot of that screen will pinpoint it.