Troubleshooting Tip: Resolving FortiClient EMS internal error due to DNS resolution issue

To resolve the FortiClient EMS internal error caused by a DNS resolution issue, follow these steps:

• Go to FortiClient EMS -> Settings -> Network and verify that the DNS settings are correct.
• Check the DNS server IP address and ensure it is reachable from the endpoint.
• Verify that the FortiClient EMS server hostname is resolvable by the DNS server.
• Flush DNS Cache over the endpoint device (if DNS has changed recently).
• If the issue persists:
  • Try to restart the endpoint and reconnect to the FortiClient EMS server.
  • Collect the FortiClient diagnostic log and FortiClient EMS diagnostic results file in debug mode and contact Fortinet Technical Support for further assistance.

Note:

The FortiClient EMS diagnostic results file can be generated by running the EMSDiagnosticTool.exe on the Windows server where FortiClient EMS is installed.