I am using Windows Server 2008 R2. For connecting, I use remote desktop. I had no problem using remote desktop with Administrator account. But, I must also register several more user accounts for my clients. I've started with first one and added account to remote desktop users. When I tried to connect again with that account I've received:
So what should I do now? I must say that for all my users I will use minimum permissions possible - all they will be allowed to do is running one program on the server.