We have a customer that is using Mac and Microsoft's RDC for Mac to their servers.
They've just upgraded from Windows Server 2003 to 2008 and can't connect through RDP to their TS server on external IP.
Their servers is not in any domain and it work for them to connect to another Windows Server 2008 that is located in their office when they use internal IP.
The problem is that when using RDC to the external IP they get bellow:
"Remote Desktop cannot verify the identity of the computer you want to connect to. This problem can occur if:
- The remote computer is running a version of Windows that is earlier than Windows Vista.
- The remote computer is configured to support only the RDP security layer.
Contact your network administrator or the owner of the remote computer for assistance."
From here they can choose "Connect" as they did on the Server 2003 but now they get: "Remote Desktop Connection cannot verify the identity of the computer that you want to connect to.Try reconnecting to the Windows-based computer, or contact our administrator."
and is only able to choose "Ok".
I've changed the settings on the "configuration for host server for remote desktop sessions" under General from "RDP-Security Layer" to "Negotiate" and in this case I get a logon windows where i type in all my information click logon. Here I get another error message which says something like: (We get it in Swedish). "Connection to the windows-based computer broke since there was a problem associated with the licensificationprotocol... Try to connect again" Where I can choose "Cansel" or "reconect" but it just keeps poping up if i chose reconnect.
I've tried all settings in the TS server and there is not much to change on the RDP client. We have installed the server certificate on the Mac client but it didn't help.
We've also tried with CoRD and it works fine as RDP from a normal Windows based computer.
The only solution I've found on google is to use CoRD instead but we got problems with that connection since it keep crasching on our computer.
In my eyes the problem is on the security requirements that the RDC for Mac needs but I can't find any inforamtion on MS sites about it.
Greatfull for all tips and trix!