HTTP Status Code 404

A status code 404, also written as "404 Not Found", is an error message you'll encounter when browsing the web. It indicates that the server you contacted received your request for a specific web page, but it couldn't find that page on its system. There are a couple of reasons why this might happen:

• The web page you requested might have simply never existed.
• The web page may have existed at one point, but it was deleted or moved to a different location.
• You might have mistyped the web address in your browser bar.

In any case, the server doesn't have what you're looking for, and it lets you know with a 404 error message. These error messages can sometimes be customized by the website you're visiting, so you might see a variety of creative "404 Not Found" pages.

Other 4xx Status Codes

• 400 Bad Request
• 401 Unauthorized
• 402 Payment Required
• 403 Forbidden
• 404 Not Found
• 405 Method Not Allowed
• 406 Not Acceptable
• 407 Proxy Authentication Required
• 408 Request Timeout
• 409 Conflict
• 410 Gone
• 411 Length Required
• 412 Precondition Failed
• 413 Payload Too Large
• 414 URI Too Long
• 415 Unsupported Media Type
• 416 Range Not Satisfiable
• 417 Expectation Failed
• 418 I'm a teapot
• 421 Misdirected Request
• 422 Unprocessable Entity
• 423 Locked
• 424 Failed Dependency
• 425 Too Early
• 426 Upgrade Required
• 428 Precondition Required
• 429 Too Many Requests
• 431 Request Header Fields Too Large
• 451 Unavailable For Legal Reasons