IIS Http 404 Error page not getting displayed correctly

Question

Can anyone please suggest from where this error page gets displayed and why?

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The default 404 error page configured to be displayed is -

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But when we navigate to the url - http://{servername}.com/, it displays the former 404 Not Found Error page.

• Dai: Could be anything in any of applicationHost.config, machine.config, web.config (for the website) or a separate web.config for a subdirectory or another application-scope. You might have configured IIS to override application-defined 404 responses - or done the opposite and always prefer application-defined 404 responses. The problem might not even lie in IIS: it could be something askew in the HTTP.sys kernel-mode component. Etc. Etc.
• NewbieHere: Thanks @Dai How to figure out what it is? We have stopped the Default IIS web site then this page displays
• Dai: By analogy, you're asking which TV channel is responsible for broadcasting static - whereas static is the absense of a TV channel. Similarly, that austere plain white "Not found" page you're seeing is because you disabled IIS's website, so you're (likely) getting a fallback response hardcoded into HTTP.sys. You can't have a custom 404 page unless IIS and its websites are running in the first place.

Answer 1

This error should be caused by misconfigured DNS settings. You may have pointed the domain to an incorrect nameserver or a wrong IP address through an A record. Therefore, you need to check if the domain is pointed correctly to solve this issue.

You should configure the hosts file as below:

xxx.xxx.xxx.xxx servername