Hello @Ben Grant
- Are you able to ping the remote computer successfully from the computer you're connecting from? It sounds more like a network problem. For this connection issue, we may need to network tracing tools like Wireshark to capture network traffic during a failed Remote Desktop connection attempt.
- Have you checked the Event Viewer on both the local and remote computers for any relevant error messages?
- Would this be related to user profile? You can try connecting to the remote computer using a new user account. You can try creating a new user account on the client device and see if the issue persists when connecting from that new account.
Best regards,
Karlie Weng