Common Error Codes

Website Status Codes

A webserver can spit out these status codes

HTTP Status 2xx

(Nothing is wrong.)

• 200 OK – Standard response for successful HTTP requests

• 201 Created – Request has been fulfilled; new resource created

• 202 Accepted – Request accepted, processing pending

• 203 Non-Authoritative Information – Request processed, information may be from another source

• 204 No Content – Request processed, no content returned

• 205 Reset Content – Eequest processed, no content returned, reset document view

• 206 Partial Content – Partial resource return due to request header

• 207 Multi-Status – XML, can contain multiple separate responses

• 208 Already Reported – Results previously returned

• 226 IM Used – Request fulfilled, reponse is instance-manipulations

HTTP Status 3xx

(Something has unusual has happened but not nothing bad.)

• 300 Multiple Choices – Multiple options for the resource delivered

• 301 Moved Permanently – This and all future requests directed to the given URI

• 302 Found – Temporary response to request found via alternative URI

• 303 See Other – Permanent response to request found via alternative URI

• 304 Not Modified – Resource has not been modified since last requested

• 305 Use Proxy – Content located elsewhere, retrieve from there

• 306 Reserved – Subsequent requests should use the specified proxy

• 307 Temporary Redirect – Connect again to different URI as provided

• 308 Permanent Redirect – Resumable HTTP requests

HTTP Status 4xx

(There's a problem.)

• 400 Bad Request – Request cannot be fulfilled due to bad syntax

• 401 Unauthorized – Authentication is possible but has failed

• 402 Payment Required – Payment required, reserved for future use

• 403 Forbidden – Server refuses to respond to request

• 404 Not Found – Requested resource could not be found

• 405 Method Not Allowed – Request method not supported by that resource

• 406 Not Acceptable – Content not acceptable according to the Accept headers

• 407 Proxy Authentication Required – Client must first authenticate itself with the proxy

• 408 Request Timeout – Server timed out waiting for the request

• 409 Conflict – Request could not be processed because of conflict

• 410 Gone – Resource is no longer available and will not be available again

• 411 Length Required – Request did not specify the length of its content

• 412 Precondition Failed – Server does not meet request preconditions

• 413 Request Entity Too Large – Request is larger than the server is willing or able to process

• 414 Request-URI Too Long – URI provided was too long for the server to process

• 415 Unsupported Media Type – Server does not support media type

• 416 Requested Range Not Satisfiable – Client has asked for unprovidable portion of the file

• 417 Expectation Failed – Server cannot meet requirements of Expect request-header field

• 422 Unprocessable Entity – Request unable to be followed due to semantic errors

• 423 Locked – Resource that is being accessed is locked

• 424 Failed Dependency – Resource that is being accessed is locked

• 426 Upgrade Required – Client should switch to a different protocol

• 428 Precondition Required – Origin server requires the request to be conditional

• 429 Too Many Requests – User has sent too many requests in a given amount of time

• 431 Request Header Fields Too Large – Server is unwilling to process the request

HTTP Status 5xx

(The server that the website is on has a problem.)

• 500 Internal Server Error – Generic error message

• 501 Not Implemented – Server does not recognise method or lacks ability to fulfill

• 502 Bad Gateway – Server received an invalid response from upstream server

• 503 Service Unavailable – Server is currently unavailable

• 504 Gateway Timeout – Gateway did not receive response from upstream server

• 505 HTTP Version Not Supported – Server does not support the HTTP protocol version

• 506 Variant Also Negotiates (Experimental) – Content negotiation for the request results in a circular reference

• 507 Insufficient Storage – Server is unable to store the representation

• 508 Loop Detected – Server detected an infinite loop while processing the request

• 509 Unassigned – Bandwidth limit exceeded

• 510 Not Extended – Further extensions to the request are required

• 511 Network Authentication Required – Client needs to authenticate to gain network access

• CLOUDFLARE SPECIFIC 5xx ERROR CODES:

  • 520 Web server is returning an unknown error -

  • 521 Web server is down – The server is powered off. Perhaps in the middle of rebooting.

  • 522 Connection timed out -

  • 523 Origin Unreachable -

  • 524 Timeout – The server is not responding. It probably needs rebooting.

  • 525 SSL handshake failed -

  • 526 Invalid SSL certificate -

Cloudflare Specific

• 1020 Access denied - Similar to a 403 Error. Traffic was blocked by a security setting within Cloudflare. Likely a Firewall rule.