Navigate to Network > Interfaces , edit your WAN interface, and uncheck Override internal DNS . CLI Method:
If your FortiGate GUI displays the error you are likely unable to select a domain for your dynamic DNS configuration. This common issue typically stems from DNS resolution conflicts, Anycast protocol interference, or specific interface settings that block communication with FortiGuard. 1. Disable "Override Internal DNS" Navigate to Network > Interfaces , edit your
Unable to load FortiGuard DDNS server list - Fortinet Community Navigate to Network > Interfaces
The FortiGuard DDNS list requires a valid FortiCare contract. Check the License Information widget on your dashboard to ensure "FortiGuard Support" is green. edit your WAN interface
config system fortiguard set fortiguard-anycast disable set protocol udp set port 8888 # Optional: Try port 443 or 53 if 8888 is blocked end Use code with caution.
Run execute ping update.fortiguard.net in the CLI.
If the server list still won't load, ensure the firewall itself can reach the internet and resolve Fortinet's service domains.