Remote Desktop Connection Error Code 0x904 Extended Error Code 0x7 Jun 2026

certlm.msc

When these two appear together, the RDP handshake proceeds through network and encryption layers successfully, but fails at the final “logon and session activation” stage.

Based on technical documentation and user reports, this error is triggered by a range of scenarios. certlm

Older servers lack modern TLS. Force client to use RDP Security Layer only:

: Hostname resolution issues, especially in Windows 11, can trigger this error. Try connecting directly via the server's IP address (e.g., 192.168.1.100 ). Force client to use RDP Security Layer only:

IT Support Desk Reading time: 6 minutes

Locate , set it to Enabled , and select RDP from the dropdown menu. Right-click the folder named , select Rename ,

Right-click the folder named , select Rename , and change it to MachineKeys_old .

Restart the service to generate a new one: Open Command Prompt as Admin and run: net stop termservice then net start termservice .

If business continuity is critical and you cannot immediately resolve the TLS handshake: