HTTP Status Codes Reference
Complete guide to HTTP response status codes — understand what each code means, when it occurs, and how to fix common errors.
1xx 1xx — Informational
100
100 Continue
The server has received the request headers and the client should proceed to send the request body.
101
101 Switching Protocols
The server is switching protocols as requested by the client.
102
102 Processing
Server has received the request and is still processing it — no response is ready yet.
103
103 Early Hints
Used to return some response headers before the final HTTP message.
2xx 2xx — Success
200
200 OK
The request has succeeded. The meaning depends on the HTTP method used.
201
201 Created
The request has been fulfilled and a new resource has been created.
202
202 Accepted
The request has been accepted for processing, but processing has not been completed.
203
203 Non-Authoritative Information
The returned metadata is from a local or third-party copy, not from the origin server.
204
204 No Content
The server successfully processed the request but returns no content.
205
205 Reset Content
Request was successful; the client should reset the document view (e.g. clear a form).
206
206 Partial Content
The server is delivering only part of the resource due to a range header.
207
207 Multi-Status
Response body contains multiple status codes for different sub-requests (WebDAV).
3xx 3xx — Redirection
300
300 Multiple Choices
Multiple options are available for the requested resource; the client should choose one.
301
301 Moved Permanently
The resource has been permanently moved to a new URL.
302
302 Found
The resource temporarily resides under a different URI.
303
303 See Other
The response to the request can be found under a different URL using a GET method.
304
304 Not Modified
The resource has not been modified since the last request.
307
307 Temporary Redirect
The request should be repeated with another URI but the method must not change.
308
308 Permanent Redirect
The resource has permanently moved and the request method must not change.
4xx 4xx — Client Error
400
400 Bad Request
The server cannot process the request due to malformed syntax.
401
401 Unauthorized
Authentication is required and has failed or not been provided.
402
402 Payment Required
Payment is required to access this resource.
403
403 Forbidden
The server understood the request but refuses to authorize it.
404
404 Not Found
The server cannot find the requested resource.
405
405 Method Not Allowed
The HTTP method used is not allowed for this resource.
406
406 Not Acceptable
The server cannot produce a response matching the client's Accept headers.
407
407 Proxy Authentication Required
Authentication is required via a proxy server before this request can be served.
408
408 Request Timeout
The server timed out waiting for the request.
409
409 Conflict
The request conflicts with the current state of the server.
410
410 Gone
The resource is no longer available and no forwarding address is known.
411
411 Length Required
The server refuses the request because the Content-Length header is missing.
412
412 Precondition Failed
One or more conditions given in the request headers evaluated to false on the server.
413
413 Payload Too Large
The request entity is larger than the server is willing to process.
414
414 URI Too Long
The URI requested by the client is longer than the server is willing to interpret.
415
415 Unsupported Media Type
The server refuses to accept the request because the payload format is unsupported.
416
416 Range Not Satisfiable
The server cannot fulfill the requested byte range for the resource.
417
417 Expectation Failed
The server cannot meet the requirements of the Expect request-header field.
418
418 I'm a Teapot
The server refuses to brew coffee because it is, permanently, a teapot.
421
421 Misdirected Request
The request was directed at a server that cannot produce a response for that combination of scheme and authority.
422
422 Unprocessable Entity
The server understands the content type but cannot process the contained instructions.
423
423 Locked
The resource that is being accessed is locked (WebDAV).
424
424 Failed Dependency
The request failed because it depended on another request that failed (WebDAV).
426
426 Upgrade Required
The client should switch to a different protocol, as indicated by the Upgrade header field.
428
428 Precondition Required
The server requires the request to be conditional to prevent the 'lost update' problem.
429
429 Too Many Requests
The user has sent too many requests in a given amount of time.
431
431 Request Header Fields Too Large
The server refuses to process the request because its header fields are too large.
451
451 Unavailable For Legal Reasons
The resource is unavailable due to legal demands.
5xx 5xx — Server Error
500
500 Internal Server Error
The server encountered an unexpected condition that prevented it from fulfilling the request.
501
501 Not Implemented
The server does not support the functionality required to fulfill the request.
502
502 Bad Gateway
The server received an invalid response from an upstream server.
503
503 Service Unavailable
The server is temporarily unable to handle the request.
504
504 Gateway Timeout
The server did not receive a timely response from the upstream server.
505
505 HTTP Version Not Supported
The server does not support the HTTP protocol version used in the request.
507
507 Insufficient Storage
The server cannot store the representation needed to complete the request (WebDAV).
508
508 Loop Detected
The server terminated an operation because it encountered an infinite loop (WebDAV).
511
511 Network Authentication Required
The client needs to authenticate to gain network access (captive portal).
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