When you try to make a Remote Desktop Connection (RDC) to a remote computer or to a Remote Desktop server (Terminal Server) that is running Windows Server 2008 R2, you receive one of the following error messages: Symptom 1: Limited Remote Desktop session or Remote Desktop Services session connections To allow more than two administrative connections or multiple user connections, you must install the RD Session Host Role and have appropriate RDS CALs. This computer can't connect to the remote computer. If the problem continues, contact the owner of the remote computer or your network administrator.Īlso, you are limited in the number of users who can connect simultaneously to a Remote Desktop session or Remote Desktop Services session. A limited number of RDP connections can be caused by misconfigured Group Policy or RDP-TCP properties in Remote Desktop Services Configuration. By default, the connection is configured to allow an unlimited number of sessions to connect to the server. You experience a port assignment conflict.

This problem might indicate that another application on the Remote Desktop server is using the same TCP port as the Remote Desktop Protocol (RDP).

The session on the Remote Desktop server does not transition to a disconnected state.You cannot make a connection by using RDP.Symptom 3: Incorrectly configured authentication and encryption settingsĪfter a Remote Desktop server client loses the connection to a Remote Desktop server, you experience one of the following symptoms: The default port assigned to RDP is 3389. Instead, it remains active even though the client is physically disconnected from the Remote Desktop server. If the client logs back in to the same Remote Desktop server, a new session may be established, and the original session may remain active.Īlso, you receive one of the following error messages:īecause of a security error, the client could not connect to the Terminal server.

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