(1) Symptoms:
1. I cannot log in to the windows server remotely after following the new patch.
Prompt:
(2) Reason for failure:
Usually, this error message points to the prohibition The remote desktop server’s secure connection is network congested. However, this error message may also be possible if the remote desktop server is configured to use TLS for a secure connection and TLS on the client (source computer) that does not support the attempted RDP connection.
(3) Solution:
Remote desktop in Windows Server 2008 R2 provides three types of secure connections:
Negotiation: This security method uses TLS 1.0 if supported TLS is to verify the identity of the server. If TLS is not supported, the server is not authenticated.
RDP security layer: This security method uses remote desktop protocol encryption to help secure communication between the client computer and the server. If you select this setting, the server fails the authentication.
SSL: This security method requires TLS 1.0 server for authentication. If TLS is not supported, you cannot establish a connection with the server. This method is only available if a valid certificate is selected.
To resolve this issue, please change the RDP security layer to allow secure connections to the remote desktop server on the remote desktop server encrypted using the remote desktop protocol. The steps are as follows:
1. Start-“Administrative Tools-“Remote Desktop Services-“Remote Desktop Session Host Configuration
2, RD Session Host Configuration-“RDP-Tcp Right-click Properties-“Set the security layer to RDP Security layer-click OK.
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