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sjoshi
Staff
sjoshi
Staff
February 10, 2026

Troubleshooting Tip: The FortiGate Web GUI is not loading any content and appears unresponsive

  • February 10, 2026
  • 0 replies
  • 1565 views
Description

 

This article describes troubleshooting steps for cases where the FortiGate Web GUI does not load any content.

 

Scope

 

FortiGate, FortiGate 6k-7k.

 

Solution

 

The FortiGate 6K chassis Web GUI is not loading. See the screenshot below for an example:

 

Screenshot 2026-02-10 091257.png

 

The content does not load and gets stuck at the same page in the loading state. This issue is not only for a specific page but for most of the firewall settings.

 

The Fortinet Support tool can be used to collect the logs while opening the FortiGate GUI.

Technical Tip: Fortinet Support Tool, Google Chrome Extension for troubleshooting GUI issues 

 

Once the logs have been captured, the following information can be observed.

 

API error 500 raised:

 

image.png

 

The API error was generated because FortiGate was not able to query product.api.fortinet.com

 

image (1).png

 

Similar logs are present in most of the capture output.

 

image (2).png

 

Execute the following command to fix this issue:

 

config system global
    set gui-fortiguard-resource-fetch disable

end

 

If FortiGate does not have access to the internet, some GUI pages do not load immediately because it tries to fetch external resources like JSON files, CSS files, and images from the product API server. If the product API server is not reachable from FortiGate, the fetch requests fail after a timeout. This causes a delay.

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