Intermittent Net::ERR_CONNECTION_RESET Error and Incomplete Loading over HTTPS

Question

I have an F5 load balancing setup configured with two servers. My MVC web application, which incorporates Kendo UI, jQuery, and Bootstrap, is hosted on an IIS server with an SSL certificate. However, when accessing the application via HTTPS from outside the server, it often or sometimes results in a 'net::ERR_CONNECTION_RESET' error, with intermittent failures to load JavaScript and CSS files to the client. Strangely, upon reloading the page, the assets load properly, and the page functions as expected. This issue did not occur when the application was accessed via HTTP, where it worked properly without any issues. What could be the reason behind this problem?

Answer 1

Hello,

The 'net::ERR_CONNECTION_RESET' error is usually caused by a network issue, where the connection between the client and server is unexpectedly closed. This can be caused by a variety of factors, including network congestion, firewall settings, or server misconfiguration.

In your case, since the issue is occurring only when accessing the application via HTTPS, it is possible that the SSL handshake is failing intermittently, causing the connection to be reset. This could be due to a misconfigured SSL certificate, or an issue with the SSL/TLS protocol version being used.

I hope this helps!

Best regards

Zunhui

Answer 2

Thank you for your response. can u help me how to identify this issue ? Are there any particular techniques you would recommend for this issue to solve?