When you’re running an administrative windows server, you’re probably used to being able to log in with the administrator account in two sessions. I found out that the configuration of rdp is a bit more hidden in server 2012, compared to earlier versions like 2008 R2. This is how you do it:
1.Run gpedit.msc (local group policy editor)
2.Go to computer configuration -> Administrative Templates -> Windows Components ->Remote Desktop Services -> Remote Desktop Session Host -> Connections.
4. Disable “Restrict Remote Desktop Services user to a single remote desktop services session”
5. Disable “Limit number of connections”
6. Go to command prompt and update the group policy using gpupdate