: The extended error code specifically signaling an issue during the security handshake or initial protocol setup. Server Fault Primary Causes and Solutions
If you're developing an application or a script involving RDP, check the relevant API documentation or developer forums. rdp 0x3 0x11
: Rarely, Windows may interpret you turning off a monitor as a display being removed, which can destabilize the graphics stack and cause an RDP session to end with the 0x3/0x11 error. : The extended error code specifically signaling an
NLA requires the client to authenticate before a session is created. A certificate or credential mismatch causes the server to reject the client instantly. NLA requires the client to authenticate before a
The specific combination of a 0x3 primary error with an 0x11 extended error is documented as a symptom of the UDP transport failing to maintain its connection state through network translation or firewalls, causing the client to drop the connection when the UDP heartbeat fails.