Hi Bill. I'm Greg, 10 years awarded Windows MVP, here to help you.
Let's see if we can fix this first and if not report it as a bug to developers.
Try these fixes for cannot sign into Remote Desktop with Microsoft Account in Windows 11:
https://pureinfotech.com/fix-remote-login-probl...
https://superuser.com/questions/1715525/how-to-...
https://windowsreport.com/windows-11-remote-des...
(Avoid ad links which intrude into editorial copy, especially avoid Restoro, PC Repair Tool and Reimage ads)
https://pureinfotech.com/enable-remote-desktop-...
https://www.elevenforum.com/t/use-remote-deskto...
https://www.youtube.com/watch?v=s3iWPnnmW0Q
If none of these work You can report this bug in the Feedback Hub in Start Menu. Microsoft developers DO read feedback from customers that comes in via the Feedback Hub, and may contact yo uif they need logs or other information to further investigate it.
Report back results for each step so I know what else to suggest.
Feel free to ask back any questions. Based on the results you post back I may have other suggestions if necessary.
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