How Can I Troubleshoot a Disconnected Session Because of a Protocol Error When I Log In to a Windows ECS?
Symptom
An error message is displayed indicating that the remote session will be disconnected because of a protocol error.
Possible Causes
The registry subkey Certificate is damaged.
Solution
- In the Run dialog box, enter regedit and click OK to open the registry editor. Figure 2 Opening the registry editor
- Choose HKEY_LOCAL_MACHINE > SYSTEM > ControlSet001 > Control > Terminal Server > RCM.
- Delete Certificate. Figure 3 Deleting Certificate
- Restart the ECS.
- Choose Start > Administrative Tools > Remote Desktop Services > Remote Desktop Session Host Configuration. Figure 4 Opening Remote Desktop Session Host Configuration
- Right-click RDP-Tcp and choose Properties. In the displayed dialog box, click General and set Security layer to RDP Security Layer. Figure 5 RDP-Tcp properties
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