Editing HTTP 404 (section)

{{Short description|Internet error message}}
{{Redirect|404 Not Found|the TV episode|404 Not Found (Mr. Robot){{!}}404 Not Found (''Mr. Robot'')}}
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In [[Data communication|computer network communications]], the '''HTTP 404''', '''404 not found''', '''404''', '''404 error''', '''page not found''', or '''file not found''' [[error message]] is a [[hypertext transfer protocol]] (HTTP) [[List of HTTP status codes|standard response code]],  to indicate that the [[Web browser|browser]] was able to communicate with a given [[Server (computing)|server]], but the server could not find what was requested. The error may also be used when a server does not wish to disclose whether it has the requested information.<ref name="section-654">{{cite IETF|rfc=7231|section=6.5.4|title= HTTP/1.1 Semantics and Content |sectionname=404 Not Found|publisher=Internet Engineering Task Force (IETF)|date=June 2014 |access-date=2018-12-13|editor-last1=Fielding |editor-last2=Reschke |editor-first1=R |editor-first2=J|s2cid=14399078 }}</ref>

The website hosting server will typically generate a "404 Not Found" web page when a user attempts to follow a [[link rot|broken or dead link]]; hence the 404 error is one of the most recognizable errors encountered on the [[World Wide Web]].

[[File:Wikimedia error 404.png|thumb|[[English Wikipedia]]'s 404 page]]