I have the same problem.
While I do have WDDM 2.2 on my Geforce card, the HDMI port on my laptop outputs through Intel HD 520 (Skylake) which is on WDDM 2.1. Because of this, I can't get my Windows Mixed Reality headset to work, even though my system specs are well enough for the graphics.
This message was posted on behalf of Intel Corporation
raphadko, for us to further assist you and to help you with the specific problem, please create a new thread, make sure to add all the details in regard to your system. This way the next agent will have a better look at your specific scenario, you can add this thread as a reference but I recommend creating a new thread in order to isolate your case.