I've been using the EO.WebBrowser control in a product for many years, upgrading with many different versions. The latest version I have been using is 25.1.22.0, but I continue to encounter an intermittent issue reported by customers when loading only following webpage: https://www.cjis.gov/nics/PRServletSSO.

At times, the browser control loads only a blank screen, and despite repeated attempts, I have been unable to reliably reproduce the issue. Customers experiencing this problem seem to be affected by something changing on the web server’s end, as the C# control fails to load the URL. However, when they access the page through Chrome or Edge outside the application, it loads without issue.

This problem always resolves itself after a random duration. Sometimes within minutes, other times after hour, causing significant frustration for users who rely on in application functionality. I have a event listener for the LoadFailedEventHandler event, however this event is not raised in this circumstance.

Troubleshooting Request
What logging or diagnostics can I enable to help identify why EO.WebBrowser fails to load this page in this circumstances?

Code Example
The issue occurs regardless of whether the call below is asynchronous or synchronous:



Any insights or debugging recommendations would be greatly appreciated.