Ensure your network is set to Private or Domain , as Windows often blocks RDP on "Public" networks by default. If you'd like to dive deeper into the logs , let me know: Are you connecting via a VPN ? Is this happening on a local network or over the internet ?
Sometimes the client and server cannot agree on whether to use SSL (TLS) or standard RDP security. Forcing a specific layer often solves the 0x11 protocol hang. rdp 0x3 0x11
Navigate to: > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Security . Ensure your network is set to Private or