Hello,
Windows Server 2012 and 2012 R2 machines will be discontinued on October 10, 2023, after which Microsoft will no longer provide security updates and technical support.
Reference link: Windows Server 2012 R2 - Microsoft Lifecycle | Microsoft Learn
However, according to your description, only this Win11 client has the problem of remote connection failure, and remote connection to other servers will also report errors, then the problem should be with the win11 client itself. You can try the following methods to troubleshoot Windows 11 Pro not connecting to a remote session (error code 0x1108):
- Are you using the IP or FQDN of the target machine when connecting remotely? Is it possible to connect remotely using another method?
- Are you using an administrator account or a normal domain account? Can I create an account on a problematic client and connect remotely?
- Remote desktop connections rely on SSL/TLS certificates to ensure the security of data transmission. A 0x1108 error is triggered if the remote computer's certificate has expired, is revoked, or is not trusted by the client. Therefore, you need to ensure that the SSL/TLS certificate of the remote computer has not expired and is issued by a trusted certificate authority. Manually import the remote computer's certificate on the client or distribute the certificate to the win11 client via Group Policy.
- The time difference between the client and the server is too large, which can lead to SSL/TLS handshake failures, because the validity check of the certificate relies on accurate time information. Make sure that the client and server are set accurately and in the same time zone.
- Check the remote desktop-related policy settings via the Group Policy Editor (gpedit.msc) to ensure that the user has sufficient permissions.
- Check the network settings of the local computer and the remote computer to check for the presence of intermediary agent software.
- Open Event Viewer and check whether there are any error messages in the RemoteDesktopServices-RdpCoreTS-Operational and TerminalServices-LocalSessionManager-Operational logs.
I hope this information helps.
Best regards,
Jingjing Wu