Remote Desktop Connection Error Code | 0x904 Extended Error Code 0x7 Full [best]

Mismatched encryption ciphers or failing Network Level Authentication (NLA). Firewall Blocks:

If the basic checks are passed but the error persists, the issue is likely deeper in the security or service configuration of the server.

Scroll down and verify that and Remote Desktop (WebSocket) are allowed on both Private and Public networks.

If a handshake mismatch occurs between the client and server, lowering the Network Level Authentication (NLA) reliance temporarily can isolate the fault.