Microsoft released patches affecting TLS fallback. If error appears after updates:
“Remote Desktop Connection cannot verify the identity of the remote computer. Do you want to connect anyway?”
Followed by:
“An authentication error has occurred. The function requested is not supported. Remote computer: [IP or hostname]. Error code: 0x904. Extended error code: 0x7.”
If a previous session is stuck in a disconnected or locked state: Microsoft released patches affecting TLS fallback
If you have physical or out-of-band access to the target server/PC:
1 (Negotiate) or 2. If it’s 0, change to 1 and reboot.Enable TLS 1.2 Support (Windows Server 2012 R2 and older): “Remote Desktop Connection cannot verify the identity of
Check CredSSP Encryption Oracle Remediation:
Event Viewer Logs:
If the services are stuck, the host will not accept new connections, resulting in extended error 0x7.