Can install Ubuntu, but not Windows 11, on a Dell Precision 7740

It’s almost certainly some BIOS settings, with all of that extra(neous) Windows security.

I have set TPM 2.0 to enables and SATA to AHCI. Secure boot is enabled. UEFI Boot Path Security is set to Never (but that looks like just a password thing).Secure Boot Mode is Deployed.

Are any settings wrong, or have I missed any?

Windows setup gets to 6% complete, then I get a dialog “Windows 11 installation has failed”