The 404 or Not Found error message is a HTTP standard response code indicating that the client was able to communicate with the server, but the server could not find what was requested.
The web site 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 users can find on the web.Another HTTP status codes list
--------------------------------------
100 - Continue
101 - Switching Protocols
102 - Processing (WebDAV; RFC 2518)
200 - OK
201 - Created
202 - Accepted
203 - Non-Authoritative Information (since HTTP/1.1)
204 - No Content
205 - Reset Content
206 - Partial Content
207 - Multi-Status (WebDAV; RFC 4918)
208 - Already Reported (WebDAV; RFC 5842)
226 - IM Used (RFC 3229)
300 - Multiple Choices
301 - Moved Permanently
302 - Found
303 - See Other (since HTTP/1.1)
304 - Not Modified
305 - Use Proxy (since HTTP/1.1)
306 - Switch Proxy
307 - Temporary Redirect (since HTTP/1.1)
308 - Permanent Redirect (approved as experimental RFC)[12]
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 - Request Entity Too Large
414 - Request-URI Too Long
415 - Unsupported Media Type
416 - Requested Range Not Satisfiable
417 - Expectation Failed
418 - I'm a teapot (RFC 2324)
419 - Authentication Timeout (not in RFC 2616)
420 - Method Failure (Spring Framework)
420 - Enhance Your Calm (Twitter)
422 - Unprocessable Entity (WebDAV; RFC 4918)
423 - Locked (WebDAV; RFC 4918)
424 - Failed Dependency (WebDAV; RFC 4918)
424 - Method Failure (WebDAV)[14]
425 - Unordered Collection (Internet draft)
426 - Upgrade Required (RFC 2817)
428 - Precondition Required (RFC 6585)
429 - Too Many Requests (RFC 6585)
431 - Request Header Fields Too Large (RFC 6585)
440 - Login Timeout
444 - No Response (Nginx)
449 - Retry With (Microsoft)
450 - Blocked by Windows Parental Controls (Microsoft)
451 - Unavailable For Legal Reasons (Internet draft)
451 - Redirect (Microsoft)
494 - Request Header Too Large (Nginx)
495 - Cert Error (Nginx)
496 - No Cert (Nginx)
497 - HTTP to HTTPS (Nginx)
499 - Client Closed Request (Nginx)
500 - Internal Server Error
501 - Not Implemented
502 - Bad Gateway
503 - Service Unavailable
504 - Gateway Timeout
505 - HTTP Version Not Supported
506 - Variant Also Negotiates (RFC 2295)
507 - Insufficient Storage (WebDAV; RFC 4918)
508 - Loop Detected (WebDAV; RFC 5842)
509 - Bandwidth Limit Exceeded (Apache bw/limited extension)
510 - Not Extended (RFC 2774)
511 - Network Authentication Required (RFC 6585)
522 - Connection timed out
524 - A timeout occurred
598 - Network read timeout error (Unknown)
599 - Network connect timeout error (Unknown)
.jpg)
