HTTP Error Code table

All HTTP status codes and their definitions.
Code Definition
2XX success
200 normal; The request is complete.
201 Normal; Immediately after the POST command.
202 normal; Accepted for processing, but processing is not yet complete.
203 normal; Part of the information-the returned information is only part of it.
204 normal; No response-the request has been received, but there is no information to echo back.
3xx redirection
301 Moved-The requested data has a new location and the change is permanent.
302 found-The requested data temporarily has a different URI.
303 See other-the response to the request can be found under another URI, and the response should be retrieved using the GET method.
304 unmodified-The document was not modified as expected.
305 using a proxy-the requested resource must be accessed through the proxy provided in the Location field.
306 unused-no longer in use; Keep this code for future use.
Errors that occur in the 4XX client
400 Error request-There is a syntax problem in the request, or the request cannot be satisfied.
401 Unauthorized-The client is not authorized to access the data.
402 Payment required-Indicates that the billing system is valid.
403 Forbidden-access is not required even with authorization.
404 Not Found-the server cannot find the given resource; The document does not exist.
407 Proxy authentication Request-The client must first use the proxy to authenticate itself.
415 media type is not supported-the server denies the service request because the format of the requested entity is not supported.
Errors that occur in the 5XX server
500 INTERNAL Error-the server could not complete the request because of an unexpected situation.
501 not executed-the server does not support the requested tool.
502 Error Gateway-server received an invalid response from the upstream server.
503 Unable to get service-the server cannot process the request due to temporary overload or maintenance.
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Invalid HTTP 400– request
HTTP 401.1– not authorized: Logon failed
HTTP 401.2– not authorized: Login failed due to server configuration problem
HTTP 401.3–acl prohibit access to resources
HTTP 401.4– not authorized: Authorization denied by filter
HTTP 401.5– not authorized: ISAPI or CGI authorization failed
HTTP 403– Disable Access
HTTP 403– access to Internet Service Manager (HTML) is limited to Localhost
HTTP 403.1 Forbidden: Disable executable access
HTTP 403.2– Forbidden: Disable Read access
HTTP 403.3– Forbidden: write-Access Forbidden
HTTP 403.4– Forbidden: SSL Required
HTTP 403.5– Forbidden: SSL 128 Required
HTTP 403.6– Forbidden: IP address denied
HTTP 403.7– Forbidden: Require client certificate
HTTP 403.8– Forbidden: Prohibit site access
HTTP 403.9– Forbidden: Too many users are connected
HTTP 403.10– Forbidden: Invalid configuration
HTTP 403.11– Forbidden: Password change
HTTP 403.12– Forbidden: Mapper denied access
HTTP 403.13– Forbidden: Client certificate has been revoked
HTTP 403.15– Forbidden: Too many client access licenses
HTTP 403.16– Forbidden: Client certificate is untrusted or invalid
HTTP 403.17– Forbidden: Client certificate has expired or is not yet valid
HTTP 404.1– cannot find Web site
HTTP 404– Cannot find file
HTTP 405– Resource is forbidden
HTTP 406– Not acceptable
HTTP 407– Proxy Authentication Required
HTTP 410– is never available
HTTP 412– Prerequisites Failed
HTTP 414– request –uri too long
HTTP 500– Internal Server error
HTTP 500.100– Internal Server error –asp error
HTTP 500-11 Server shutdown
HTTP 500-12 Application Restart
HTTP 500-13– Server Too busy
Invalid HTTP 500-14– application
HTTP 500-15– does not allow request Global.asa
Error 501– Not implemented
HTTP 502– Gateway Error

HTTP Error Code table