Windows 10 1909 - OpenXR installation = OK
Upgrade to 2004, ‘works’ according to System Status, ‘Demo Scene’ = OK,
but, Developer Settings important page, nope:
‘Something went wrong
Error communicating with the Mixed Reality OpenXR Service.’
This page is important for flying MSFS.
Uninstall/Reinstall, nope, won’t get it to work.
N.B. System Status page = OK