HTTP 404

"404 Not Found" redirects here. For the TV episode, see 404 Not Found (Mr. Robot).

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In 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) standard response code, to indicate that the browser was able to communicate with a given 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.[1]

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

English Wikipedia's 404 page
  1. ^ Fielding, R.; Reschke, J. (June 2014). Fielding, R; Reschke, J (eds.). "RFC 7231, HTTP/1.1 Semantics and Content, Section 6.5.4 404 Not Found". Internet Engineering Task Force (IETF). doi:10.17487/RFC7231. S2CID 14399078. Retrieved 13 December 2018.