: Run execute ping www.fortinet.com in the CLI. If it fails, your general DNS settings under Network > DNS need correction.

I'll do my best to help you troubleshoot the issue or point you in the right direction for further assistance.

If you’ve completed all steps and the error persists, it is likely a transient FortiGuard cloud issue or a corrupted FortiGuard cache. In that case, perform a graceful reboot of the FortiGate and then run: