I have a Asus X99-A II motherboard with a i7-6850k. Did standard Win11 installation work for you? PC check and WhyNotWin11 both shows that the CPU is not supported (and that TPM is missing, but I can handle that with an add-on) Or did you install with the CPU compatibility flag turned off?
Also, do you know which X99 supported CPUs officially support win11? I can't really find any..
It's running without issue and with a very mild x40 overclock. No TPM.
I installed W11 on my X99 by preparing the nvme on a separate machine, you essentially expand the microsoft image onto the disk.
Not exactly standard. No 3rd party tool or extra download. All done using powershell.
Your 6850K will run it just fine.
Changed my CPU to a Xeon E5-2697Av4 and fitted a Supermicro TPM-9665V-S (S type not C)
I can now install Windows 11 without any fixes
Do you have a guide for that? why not install with the no tpm no cpu flags? does it now show the watermark MS instated in the latest update for machines that do not support win11?