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HTTP Status Codes

Every standard HTTP status code, grouped by class, with what it means, when it happens and how to fix it.

Class:All1xx Informational 32xx Successful 93xx Redirection 84xx Client Error 275xx Server Error 9

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200
OK
301
Moved Permanently
302
Found
400
Bad Request
401
Unauthorized
403
Forbidden
404
Not Found
405
Method Not Allowed
408
Request Timeout
409
Conflict
410
Gone
413
Payload Too Large
415
Unsupported Media Type
418
I'm a teapot
422
Unprocessable Entity
429
Too Many Requests
500
Internal Server Error
502
Bad Gateway
503
Service Unavailable
504
Gateway Time-out
100 ContinueInformational
101 Switching ProtocolsInformational
102 ProcessingInformational
200 OKSuccessful
201 CreatedSuccessful
202 AcceptedSuccessful
203 Non-Authoritative InformationSuccessful
204 No ContentSuccessful
205 Reset ContentSuccessful
206 Partial ContentSuccessful
207 Multi-StatusSuccessful
226 IM UsedSuccessful
300 Multiple ChoicesRedirection
301 Moved PermanentlyRedirection
302 FoundRedirection
303 See OtherRedirection
304 Not ModifiedRedirection
305 Use ProxyRedirection
307 Temporary RedirectRedirection
308 Permanent RedirectRedirection
400 Bad RequestClient Error
401 UnauthorizedClient Error
402 Payment RequiredClient Error
403 ForbiddenClient Error
404 Not FoundClient Error
405 Method Not AllowedClient Error
406 Not AcceptableClient Error
407 Proxy Authentication RequiredClient Error
408 Request TimeoutClient Error
409 ConflictClient Error
410 GoneClient Error
411 Length RequiredClient Error
412 Precondition FailedClient Error
413 Payload Too LargeClient Error
414 URI Too LongClient Error
415 Unsupported Media TypeClient Error
416 Range Not SatisfiableClient Error
417 Expectation FailedClient Error
418 I'm a teapotClient Error
422 Unprocessable EntityClient Error
423 LockedClient Error
424 Failed DependencyClient Error
426 Upgrade RequiredClient Error
428 Precondition RequiredClient Error
429 Too Many RequestsClient Error
431 Request Header Fields Too LargeClient Error
451 Unavailable For Legal ReasonsClient Error
500 Internal Server ErrorServer Error
501 Not ImplementedServer Error
502 Bad GatewayServer Error
503 Service UnavailableServer Error
504 Gateway Time-outServer Error
505 HTTP Version Not SupportedServer Error
506 Variant Also NegotiatesServer Error
507 Insufficient StorageServer Error
511 Network Authentication RequiredServer Error