{"id":20401,"date":"2020-01-29T16:43:10","date_gmt":"2020-01-29T16:43:10","guid":{"rendered":"https:\/\/www.arimetrics.com\/glosario-digital\/error-404"},"modified":"2026-09-24T17:52:46","modified_gmt":"2026-09-24T17:52:46","slug":"404-error","status":"publish","type":"encyclopedia","link":"https:\/\/www.arimetrics.com\/en\/digital-glossary\/404-error","title":{"rendered":"404 Error"},"content":{"rendered":"

\"404 Definition:<\/strong><\/p>\n

A 404 error<\/strong> is an HTTP<\/a> response indicating that the server has not found the requested resource. Its full name is “404 Not Found”, and it may appear when someone tries to open a page, file, or other URL<\/a> that does not exist at that address.<\/p>\n

The code describes the outcome of the request, while the 404 page is the interface shown to the user. A custom design can provide navigation or a search function, but the HTTP response should still communicate the correct status.<\/p>\n\n

What the 404 code means<\/h2>\n

HTTP status codes contain three digits. The first places the response in a general class, and the 4xx group covers requests that cannot be completed because of a condition associated with the request. In the case of 404, the server has no representation for the requested address or is not disclosing whether one exists.<\/p>\n

The 404 code does not by itself indicate whether the absence is temporary or permanent. It also does not necessarily place the blame on the visitor: a mistyped URL can cause it, but so can a deleted route, broken link<\/a>, or site configuration problem.<\/p>\n

Common causes<\/h2>\n

The response may originate in the address being used, changes made to the content, or the way the server resolves routes:<\/p>\n