HTTP Error Codes

100

1xx Informational

Continue

The server has received the request headers and the client should proceed to send the request body.

101

1xx Informational

Switching Protocols

The requester has asked the server to switch protocols and the server has agreed to do so.

102

1xx Informational

Processing

This code indicates that the server has received and is processing the request, but no response is available yet.

103

1xx Informational

Early Hints

Used to return some response headers before final HTTP message.

200

2xx Success

OK

The request has succeeded. The meaning of the success depends on the HTTP method.

201

2xx Success

Created

The request has succeeded and a new resource has been created as a result.

202

2xx Success

Accepted

The request has been accepted for processing, but the processing has not been completed.

203

2xx Success

Non-Authoritative Info

The request was successful but the enclosed payload has been modified from that of the origin server's 200 response.

204

2xx Success

No Content

The server successfully processed the request and is not returning any content.

205

2xx Success

Reset Content

The server successfully processed the request and wants the client to reset the document view.

206

2xx Success

Partial Content

The server is delivering only part of the resource due to a range header sent by the client.

207

2xx Success

Multi-Status

Provides status for multiple independent operations, used in WebDAV.

208

2xx Success

Already Reported

Used in WebDAV. Members of a DAV binding have already been enumerated in a previous reply.

226

2xx Success

IM Used

The server has fulfilled a request for the resource using instance-manipulation.

300

3xx Redirection

Multiple Choices

The request has more than one possible response. The user-agent or user should choose one.

301

3xx Redirection

Moved Permanently

The URL of the requested resource has been changed permanently. The new URL is given in the response.

302

3xx Redirection

Found

The URL of the requested resource has been temporarily changed. New changes are given in the URL.

303

3xx Redirection

See Other

The server sent this response to direct the client to get the requested resource at another URI with a GET request.

304

3xx Redirection

Not Modified

This is used for caching purposes. It tells the client that the response has not been modified.

305

3xx Redirection

Use Proxy

Defined in a previous version of HTTP specification. Indicates the requested resource must be accessed through a proxy.

307

3xx Redirection

Temporary Redirect

The server sends this response to direct the client to get the requested resource at another URI with same method.

308

3xx Redirection

Permanent Redirect

The resource is now permanently located at another URI. The client should use the new URI for future requests.

400

4xx Client Error

Bad Request

The server could not understand the request due to invalid syntax.

401

4xx Client Error

Unauthorized

The client must authenticate itself to get the requested response.

402

4xx Client Error

Payment Required

This response code is reserved for future use. Initial idea was for digital payment systems.

403

4xx Client Error

Forbidden

The client does not have access rights to the content. Unlike 401, the client's identity is known to the server.

404

4xx Client Error

Not Found

The server can not find the requested resource. This is one of the most common errors on the web.

405

4xx Client Error

Method Not Allowed

The request method is known by the server but is not supported by the target resource.

406

4xx Client Error

Not Acceptable

The server cannot produce a response matching the list of acceptable values defined in the request headers.

407

4xx Client Error

Proxy Auth Required

The client must first authenticate itself with the proxy.

408

4xx Client Error

Request Timeout

The server timed out waiting for the request. The client may repeat the request later.

409

4xx Client Error

Conflict

This response is sent when a request conflicts with the current state of the server.

410

4xx Client Error

Gone

The requested resource is no longer available and will not be available again.

411

4xx Client Error

Length Required

The request did not specify the length of its content, which is required by the requested resource.

412

4xx Client Error

Precondition Failed

The server does not meet one of the preconditions that the requester put on the request header fields.

413

4xx Client Error

Payload Too Large

The request is larger than the server is willing or able to process.

414

4xx Client Error

URI Too Long

The URI requested by the client is longer than the server is willing to interpret.

415

4xx Client Error

Unsupported Media Type

The media format of the requested data is not supported by the server.

416

4xx Client Error

Range Not Satisfiable

The range specified in the request header cannot be fulfilled by the server.

417

4xx Client Error

Expectation Failed

The server cannot meet the requirements of the Expect request-header field.

418

4xx Client Error

I'm a Teapot

The server refuses to brew coffee because it is, permanently, a teapot.

421

4xx Client Error

Misdirected Request

The request was directed at a server that is not able to produce a response.

422

4xx Client Error

Unprocessable Entity

The request was well-formed but was unable to be followed due to semantic errors.

423

4xx Client Error

Locked

The resource that is being accessed is locked.

424

4xx Client Error

Failed Dependency

The request failed because it depended on another request and that request failed.

425

4xx Client Error

Too Early

The server is unwilling to risk processing a request that might be replayed.

426

4xx Client Error

Upgrade Required

The server refuses to perform the request using the current protocol.

428

4xx Client Error

Precondition Required

The origin server requires the request to be conditional.

429

4xx Client Error

Too Many Requests

The user has sent too many requests in a given amount of time.

431

4xx Client Error

Headers Too Large

The server is unwilling to process the request because its header fields are too large.

451

4xx Client Error

Unavailable for Legal

The resource is unavailable for legal reasons, such as censorship or government-mandated blocked access.

500

5xx Server Error

Internal Server Error

The server encountered an unexpected condition that prevented it from fulfilling the request.

501

5xx Server Error

Not Implemented

The server does not support the functionality required to fulfill the request.

502

5xx Server Error

Bad Gateway

The server, while acting as a gateway, received an invalid response from the upstream server.

503

5xx Server Error

Service Unavailable

The server is not ready to handle the request. Usually due to maintenance or overload.

504

5xx Server Error

Gateway Timeout

The server, while acting as a gateway, did not receive a timely response from the upstream server.

505

5xx Server Error

HTTP Version Not Supported

The server does not support, or refuses to support, the major version of HTTP used in the request.

506

5xx Server Error

Variant Also Negotiates

The server has an internal configuration error: transparent content negotiation resulted in a circular reference.

507

5xx Server Error

Insufficient Storage

The server is unable to store the representation needed to complete the request.

508

5xx Server Error

Loop Detected

The server detected an infinite loop while processing the request.

510

5xx Server Error

Not Extended

Further extensions to the request are required for the server to fulfill it.

511

5xx Server Error

Network Auth Required

The client needs to authenticate to gain network access.