Having big problem getting RDP access to one of our TMG servers and wonder if anyone has come across this. I have configured the system rule to allow RDP to a new Computer Set which includes my own PC, to localhost. This configuration works fine on the other TMG server - also in a locked down DMZ.
The problem I have with this server, and this is probably the cause of the non-access, is that when I go into the Remote Desktop Session Host Configuration, if I select the "Network Adapter" tab through the properties of the connection, the applet crashes with "Remote Desktop Session Host Configuration tool is not able to obtain the properties for this connection. The connection has either been deleted or the internal state of this connection has been corrupted" Seloect OK and the properties of this tab are grayed out - I cannot select the network team to associate with this connection. Event 1067 is logged at boot, but when I try to register the SPN get INVALID SPN. Suspect that the DMZ firewall is blocking many connections to the DC.