Hi @ed
The error: 0xc1900223 is related to a compability hold to offer newer FU. You can find more information on what is causing this block can be found infile: CompatData_***.xml which is located in: $Windows~BT\sources\panther
For a list of current upgrade blocks on Windows 20h2 please refer to: https://learn.microsoft.com/en-us/windows/release-health/status-windows-10-20h2
Regards,
Juan Sobrado