I have installed Windows Server 2012 for about 9 months ago. Earlier I could connect to my server with an external IP perfectly, but the license for the remote desktop services has ended.

First, I thought it was the reason, why I couldn't use my server as RDP-server, to which users may connect.

But, than in web I read, that it's possible to use windows native features, just to remove the RDP services, which are trial and the server will work as RDP-server, but with some limitations ( for e.g. such free RDP service may accept only 1 connection and other connection will be disconnected etc ).

Is it true, that it's possible? If yes, please give a piece of advice, how should I repair it.

Because I don't want to use TightVNC or other stuff.

Thanks!