I'm using Remote Desktop Connection to connect to my Terminal Server. When opening Remote Desktop Connection, I put in the FQDN (ts.example-cloud.com) in the Computer field, switch to the tab Security in the Remote Desktop Connection (the last tab or configuration window). There you can choose the Authentication method to use when connecting to the remote computer (in this case the terminal server). If I choose Require authentication I can’t connect to the terminal server. Attempt- and No authentication result in the following message, and I have to enter the username and password again.

The message is:

The identity of the remote computer cannot be determined because the remote computer is not configured to support authentication.
Remote computer: ts.example-cloud.com
The connection cannot proceed because authentication of the remote computer is required.




The security tab is for confirming the identity of the server you are attempting to connect to. For this to work, you need to have a certificate installed on your TS, issued by an authority that the workstation trusts, and that matches the FQDN entered in the computer field.

It DOES NOT authenticate the client workstation or user in any way. The three options:

No authentication-->Does not attempt to confirm the identity of the server you are connecting to.

Attempt authentication-->Tries to confirm the identity of the server you are connecting to by examining the server’s certificate. If the server’s identity cannot be confirmed or does not match the name you typed, you are notified and given the option to continue or not.

Require authentication-->Tries to confirm the identity of the server you are connecting to by examining the server’s certificate. If the server’s identity cannot be confirmed or does not match the name you typed, you are notified and prevented from connecting.