: If you're connecting to a RD Session Host server, misconfigurations on the server side can cause connection problems.
If you are connecting to a corporate network via VPN, ensure the VPN is active and stable. The 0x904 error often appears if the VPN drops packets or if your local subnet conflicts with the remote subnet (e.g., both are using 192.168.1.x ). Consult your network administrator to ensure the VPN is routing traffic correctly to the remote host. : If you're connecting to a RD Session