Remote Desktop sessions that freeze, pause, or disconnect can sometimes be stabilized by disabling UDP on the Windows client. The policy value fClientDisableUDP provides a direct way to do this. Set the DWORD value to 1, reconnect, and Windows will use TCP only for new RDP connections.

This setting is useful when a VPN, firewall, network appliance, or unstable connection does not handle RDP over UDP reliably. However, it is a troubleshooting measure rather than a universal fix. UDP can provide a smoother Remote Desktop experience on healthy networks, so you should only force TCP when testing or resolving a specific connection problem.