Hello Mohammed, The issue you are facing with RDP on your Windows Server 2012 R2 is likely due to an expired RDP certificate. RDP certificates are used to encrypt communication between the client and server during an RDP session. To avoid this issue in the future, you can configure automatic certificate renewal for RDP on your servers. This can be done by setting up a Certificate Authority (CA) in your environment and configuring Group Policy to automatically request and renew RDP certificates from the CA. To resolve the current issue, you can generate and install a self-signed RDP certificate on your server. This can be done using the following steps: nullnullnullnullnullnullnullnullnull
Once the new certificate is installed and configured, RDP should work as expected on your server. I hope this helps. Let me know if you have any further questions.
Kind regards,
Luke Madden