Enable Multiple RDP Sessions 2012 Server

https://support.managed.com/kb/a1816/how-to-enable-disable-multiple-rdp-sessions-in-windows-2012.aspx


Enable Multiple RDP Sessions

1. Log into the server using Remote Desktop.
2. Open the start screen (press the Windows key) and type gpedit.msc and open it
3. Go to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Connections.
4. Set Restrict Remote Desktop Services user to a single Remote Desktop Services session to Disabled.
5. Double click Limit number of connections and set the RD Maximum Connections allowed to 999999.
   

Disable Multiple RDP Sessions

1. Log into the server using Remote Desktop.
2. Open the start menu and type 'gpedit.msc' and open it
3. Go to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Connections.
4. Set Restrict Remote Desktop Services user to a single Remote Desktop Services session to Enabled.