ERR_EMPTY_RESPONSE in ASP.NET MVC WebSite

Question

I'm receiving this error(ERR_EMPTY_RESPONSE) on my WebSite(ASP.NET MVC) in some PCs of my clients. In different clients(with diferent browsers) the Controller that show this error is different. One of them i have access and i tryed to debug with VisualStudio.

Test in production

Test locally

Receiving the same error as production. I put some break points in Index of this controller and BeginRequest/AuthenticateRequest of Global.asax, but in this client when i call CompanyUsersController don't pass in break points and others Controllers pass. I tryed using Fiddler 2, the same as chrome inspector, get 0 Bytes in Response.

I spent so much time trying to found a better error message

The problem is probably on the server, I am using Azure. This same project was already running a long time without problems.

Someone can share this same experience? And/or the solution?

Answer 1

I received this on an ASP.NET Core 2.2 site in development on my machine.

Nothing logged, the call just fails in Chrome's network trace. Fiddler shows a HTTP 504. Strange!

After 10 minutes I realised my URL was HTTP when it should be HTTPS!

Answer 2

I found the solution.

Searching in machines that show the error Err_empty_response, i found a software used by Banks for safety.

This software is called in Brazil from WARSAW or GBuster.

Solution 1:

Remove this software.

Solution 2:

Another solution works without removing the software. i have just to publish my website again with https:// certificate.

I hope this help someone.