To resolve potential Windows 11 bugs, use the direct IP address instead of the hostname in the RDP client, or flush the local DNS cache using ipconfig /flushdns .
After digging, (a low-level session or credential manager corruption), combined with 0x904 pointing to a TLS/SSL handshake or CredSSP mismatch. In plain English: the client and server completely disagreed on security settings, likely due to a Windows update or a corrupt local RDP cache. To resolve potential Windows 11 bugs, use the
Did this error start or certificate renewal? Are other users able to connect to the same machine? To resolve potential Windows 11 bugs