Windows 7 Remote Desktop x64 Connection Problem

It seems like you have already tried several troubleshooting steps to resolve the issue with Windows Remote Desktop on the PC running Windows 7 x64 Professional in a domain network. Since the problem persists despite these efforts, there are a few additional steps you can take to further diagnose and potentially solve the problem: 1. Check Remote Desktop Settings: - Verify that Remote Desktop is enabled on the problematic PC. - Go to Control Panel > System and Security > System. - Click on "Remote settings" on the left pane. - Ensure that "Allow remote connections to this computer" is selected. - Check the Remote Desktop settings in the system properties and ensure the appropriate users have permission to connect remotely. 2. Check Remote Desktop Services: - Ensure that the Remote Desktop Services are running on the PC. You can check this in the Services application (services.msc). - Look for services like "Remote Desktop Services" and "Remote Desktop Services UserMode Port Redirector" and confirm they are running. 3. Check Group Policy Settings: - There might be group policies that are restricting Remote Desktop access. Verify the group policies related to Remote Desktop access on the machine. - You can do this by running gpedit.msc and navigating to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services. 4. Check Remote Desktop Protocol (RDP) versions: - Ensure that the RDP version on the client and server machines are compatible. You might need to update RDP if there are version compatibility issues. 5. Network Level Authentication (NLA): - Check if NLA is enabled on the PC you are trying to connect to. NLA can sometimes cause issues with Remote Desktop connections. Try disabling NLA to see if it resolves the problem. 6. Event Viewer: - Check the Event Viewer on the PC for any errors or warnings related to Remote Desktop connections. This can provide more insights into what might be causing the issue. 7. Check for Third-Party Firewalls or Security Software: - Even if you disabled the Windows Firewall, there could be third-party security software blocking the Remote Desktop connection. Ensure any third-party firewalls or security software are not causing the issue. If after trying these steps you are still unable to establish a Remote Desktop connection, it might be worth considering upgrading the PC's operating system to a more recent version like Windows 10, as Windows 7 is no longer supported by Microsoft.