Often I had been getting the following error connecting to Windows Terminal Servers using the included Remmina Remote Desktop Client on my Ubuntu 14.10 workstation:
Searching around the web, I came across the following solution which seems to work:
- Open the Remmina client and select the host you can’t connect to
- Click Edit (Pencil button on toolbar)
- Click the Advanced tab
- From Security, select TLS from the pull-down menu
And that’s it! I can consistently connect.