I upgraded to Windows 11 pro from a fresh install of Windows 10 Pro (unknown which version) the week that 11 came out. Since then, I am not able to connect to ANY Remote Desktop server. I get an authentication failure message with the error code 0x800706be. A cursory search on google indicates that this seems to only crop up when doing an upgrade vs a fresh install.
I’ve tried sfc and it did find and fix at least one corrupted file but I still can’t use Remote Desktop unless I use the windows store app, which is not great for my use case. I was hoping that I’d see a fix come in on patch Tuesday but I still haven’t.
Here’s an example of the problem:
2 Reset to defaultI solved my issue in a radical way, maybe this will help to find a bugfix:
Because it was a new PC with a fresh Win10 installation from Sunday (honestly an old version from 09.2017 which I upgraded to latest possible, in my case 20H2).
Everything was fine, RDP made a good job with the latest Win10 20H2 version.
Two days later I made the Win11 upgrade on Tuesday and the reported error appeared. I just installed a few programms on my Win10: LibreOffice, Tracker PDFeditor and old versions of OneNote (Desktop) and Adobe CS.
Because I found no bugfixes online, I decided to waste no time and go ahead with new installation:
First try: Win11 repair with keeping all personal data > no effect, problem was still the same.
Second try: Complete fresh Win11 installation with formating the HDD > After that and also after installing the same programs, the mstsc.exe RDP programm worked without any problem. EDIT: I forgot, I installed 7zip on Win10 but not after the fresh Win11 installation.
Obviously it a problem with the Update and not with the mstsc.exe or with the account in general. The MS Store RDP client (which is really bad) worked. But this is not really a solution for a full dialy use and if the fullscreen without the task bar of the local system is needed. Hopefully this will not happen again with a later Win11 update.
