Aurora R9, cannot get Win 11 Memory Integrity to work. Can anyone confirm R9 BIOS DOES NOT make MAT available?

There are no incompatible drivers. Scanning tool hvciscan_amd64.exe confirms there are no incompatible drivers but displays the error:

UEFI WX Memory Attributes Table required.

I am running the latest BIOS version Alienware 1.0.26, 11/22/2023

If my theory is correct, no one running Win 11 on an Aurora R9 can get this to work.  Can anyone confirm or deny?