This article summarizes the various causes for Terminal Server Client
Terminal Server Client (Remote Desktop Client) connection failures such as "Unable to RDP, "Remote Desktop Disconnected," or "Unable to Connect to Remote Desktop (Terminal server)" are common problems that we have seen in product support. This article summarizes the various causes for such failures.
The following are some of the commonly seen symptoms:
- You may be limited in the number of users who can connect simultaneously to a Remote Desktop session or Remote Desktop Services session.
- You may have a port assignment conflict.
- You may have an incorrectly-configured Authentication and Encryption setting.
- You may have a certificate corruption.
All the steps are documented in these articles, based on the server operating system:
Additionally, we have more symptoms documented in the following Microsoft TechNet article:
Troubleshooting General Remote Desktop Error messageshttp://technet.microsoft.com/en-us/library/cc780927(WS.10).aspx