I am noticing the same issue in our environment.
Windows 7 Pro 64-bit
Running as Service (system account)
Both Server/Viewer are 18.104.22.168
I've read through; Connection get lost after logout a domain user
in hopes to find a solution but still nothing seems to correct it.
From a fresh boot I can connect to the Ctrl-Alt-Del screen, log in, and manage the machine. However, after selecting log off I am disconnected and cannot reconnect until a reboot. I have tried variations of the following settings; AllowShutdown, kickrdp, QuerySetting, and QueryIfNoLogon.
Any help is appreciated. Thanks,