Troubleshooting Tip: How to troubleshoot when FortiManager shows the error 'Error occurred,please try login later.' when trying to login

1. When trying to log in to FortiManager VM using a trial license, FortiManager prompts an error: 'Error occurred, please try login later.'.

2. Run debug as below and try to log in again:

diagnose debug application curl 255
diagnose debug enable

3. In this scenario, the debug output shows:

Error when retrieving trial license from FortiClouds : Error occurred, please try again later.

4. Therefore, to resolve this issue, the FortiManager VM must have connectivity to FortiCloud.

5. Or download a VM license from Support and upload it manually as a quick workaround.