Technical Tip: FortiGate CLI web access fails for SSO administrators with error 'Connection lost. Press Enter to start a new Session.'

When trying to access the CLI Console from the GUI interface of FortiGate, the error 'Connection lost. Press Enter to start a new Session.' appears.

This issue is triggered only when SSO Administrators are logged into FortiGate:


This issue has been resolved in FortiOS v7.6.4.

General debug information required by FortiGate TAC for investigation.

Use PuTTY to SSH into the FortiGate and run the required commands.

• Debugs:

diagnose debug console timestamp enable
diagnose debug application httpsd -1
diagnose debug enable

Reproduce the issue to collect logs . Use following commands to stop the debug

diagnose debug reset

diagnose debug disable

• TAC Report: Technical Tip: Download Debug Logs and 'execute tac report': 

execute tac report

• Configuration file of the FortiGate: Technical Tip: How to download FortiGate configuration file & Debug log from GUI.
• FortiGate Support Tool data: Troubleshooting Tip: Collect GUI slowness and errors debugs via Fortinet Support Tool.