Unable To Load Fortiguard Ddns Servers List On Fortigate Firewalls Access

For immediate relief, manually configuring the DDNS entry via CLI bypasses the list loading step entirely. However, for long-term health, ensure the FortiGate can reach services.fortiguard.net over HTTPS with correct time and valid certificates.

config system fortiguard set proxy-type proxy set proxy-server <proxy-ip> set proxy-port <port> set proxy-auth disable end Without this, HTTPS requests bypass the proxy and fail. Sometimes the local cache corrupts. Clear it with: For immediate relief, manually configuring the DDNS entry

Check system time:

Introduction FortiGate firewalls offer a built-in Dynamic DNS (DDNS) client that works seamlessly with Fortinet’s own FortiGuard DDNS service (e.g., *.fortiddns.com ). However, administrators occasionally encounter a frustrating issue: when attempting to configure DDNS, the firewall displays the error: "Unable to load FortiGuard DDNS servers list." This message typically appears in the GUI under Network > DNS > Dynamic DNS when clicking the dropdown for server selection, or during CLI operations. Without access to this list, you cannot select the FortiGuard DDNS service, making dynamic updates impossible. Sometimes the local cache corrupts

Check for overrides:

config system ntp set ntpsync enable set server "pool.ntp.org" end Then force a sync: Without access to this list, you cannot select