This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For protection, back up the registry before you modify it so that you can restore it if a problem occurs. For more information about how to back up and restore the registry, see ., In Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Connections, find the Allow users to connect remotely by using Remote Desktop Services policy. If the setting for this policy is Enabled, Group Policy is not blocking RDP connections., More information 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..