Troubleshooting Tip: Unable to access the Standalone FortiSwitch GUI: '500 Internal Server Error'

[SPrabu]

Description	This article describes the steps to troubleshoot a 500 Internal Server Error encountered while attempting to access the GUI of a standalone FortiSwitch.
Scope	FortiSwitch Models.
Solution	Verify if the default Fortinet Certificates are being used. Use the following command to check the current certificate configuration: FortiSwitch CLI: show full-configuration system global Confirm the output includes: config system global     set 802.1x-ca-certificate "Fortinet_CA"     set 802.1x-certificate "Fortinet_Factory" Check for System crashes. Look for any crash logs on the FortiSwitch: diagnose debug crashlog read Collect debug logs for the GUI and HTTPS daemon. Enable debug logging to gather more details: diagnose debug application httpsd -1 diagnose debug application gui -1 diagnose debug cli 8 diagnose debug enable These steps can help identify and resolve the root cause of the GUI access issue. If the problem persists, collect the logs and share them with Fortinet support with a TAC case.