Many of us have been struggling with failing RDP connections since an O/S update went out from Microsoft on Tuesday (5/8/18)
The answer to the connection issue is to patch all the computers involved and it should be fine. But often server owners need to control how updates are applied for a variety of very good reasons... so we have a problem.
I found a solution that worked for me and I'm posting it below so I don't lose it...
Please understand that this approach is not best practice and will allow the security vulnerability to continue. But I don't have a choice, I need to get to work.