The following procedure is good for connecting to server with Novell client installed.

Open RDP. Save the Connection settings to the server you want to connect to.

Open Notepad and change type from *.txt to *.*.

Select the RDP file that you created. 

Add at the end: enablecredsspsupport:i:0 

Save and exit. 

After successful connection to the RDP session, User will be routed directly to the original server login.