404 Error Code

Updated Sept 29, 2020 · 2 min read

What is a 404 error code?

A 404 error code is an Hypertext Transfer Protocol status response code (or HTTP status code) indicating that the page on a website a user is trying to reach can’t be found. In other words, while the server is reachable, the specific page can’t be reached. For example, the following is an example of a 404 error page from Pixar:

Users will typically receive one of the following error codes:

  • 404
  • 404 Error
  • 404 Not Found
  • 404 Page Not Found
  • Error 404 Not Found
  • File Not Found
  • HTTP 404
  • Page Not Found
  • Server Not Found

Cause of a 404 error code

404 error codes typically appear because either:

  • A user entered a URL incorrectly.
  • The page the user previously accessed was moved or removed without redirecting users to the new page.

Related Terms

HyperText Transfer Protocol (HTTP)

HyperText Transfer Protocol (HTTP) is the protocol used by the Web that defines how messages are formatted and transmitted between devices...

HTTP Status Codes

HTTP status codes are transmitted by a server in response to a request from a client. The status codes indicate whether a request was...


A server is a computer that provides a service (such as providing data) to other computers and its users, known as the clients.