I, for one, did run the hvciscan_amd64 tool. Apparently, it found no incompatible drivers To wit:
C:\Temp> .\hvciscan_amd64
VbsGetIssues: 0x00020040
UEFI WX Memory Attributes Table required
8GB RAM required
VbsIsRecommended: 0
HVCI incompatible driver scan start...
HVCI: Driver scanning complete
HVCI incompatible driver scan passed!
And still, the dreadful update won't install. This little game has now lasted far too long. Let Microsoft sort that boo-boo out until one can install the thing without all those convolutions it has put its users through.
The whole caboodle is a digital scandal. Meanwhile, let whoever is in charge include me out. I'm giving up.