IETF. Authorization will not help. and then hopefully a solution.Start by taking the message literally - has something crashed? Such an event is common for limited-time, promotional services and for resources belonging to individuals no longer working at the server's site. visit
Cloudflare Cloudflare's reverse proxy service expands the 5xx series of errors space to signal issues with the origin server. 520 Unknown Error The 520 error is used as a "catch-all response for when the origin server returns something unexpected", listing connection resets, large headers, and empty or invalid responses as common triggers. 521 Web Server Is Down The origin server has refused the connection from Cloudflare. 522 Connection Timed Out Cloudflare could not negotiate a TCP handshake with the origin server. 523 Origin Is Unreachable Cloudflare could not reach the origin server; for example, if the DNS records for the origin server are incorrect. 524 A Timeout Occurred Cloudflare was able to complete a TCP connection to the origin server, but did not receive a timely HTTP response. 525 SSL Handshake Failed Cloudflare could not negotiate a SSL/TLS handshake with the origin server. 526 Invalid SSL Certificate Cloudflare could not validate the SSL/TLS certificate that the origin server presented. 527 Railgun Error A 527 error indicates that the requests timeout or failed after the WAN connection has been established. See also Custom error pages List of FTP server return codes List of HTTP header fields Notes ^ Italicised words and phrases such as must and should represent interpretation guidelines as given by RFC 2119 References ^ "Hypertext Transfer Protocol -- HTTP/1.1". If the client continues sending data to the server after the close, the server's TCP stack will send a reset packet to the client, which may erase the client's unacknowledged input buffers before they can be read and interpreted by the HTTP application. 10.4.1 400 Bad Request The request could not be understood by the server due to malformed syntax. the Web site is simply unavailable. The data sections of messages Error, Forward and redirection responses may be used to contain human-readable diagnostic information.
Proxies MUST forward 1xx responses, unless the connection between the proxy and its client has been closed, or unless the proxy itself requested the generation of the 1xx response. (For example, if a proxy adds a "Expect: 100-continue" field when it forwards a request, then it need not forward the corresponding 100 (Continue) response(s).) 10.1.1 100 Continue The client SHOULD continue with its request. Proxies MUST forward 1xx responses, unless the connection between the proxy and its client has been closed, or unless the proxy itself requested the generation of the 1xx response. (For example, if a proxy adds a "Expect: 100-continue" field when it forwards a request, then it need not forward the corresponding 100 (Continue) response(s).) 10.1.1 100 Continue The client SHOULD continue with its request. Retrieved 16 October 2015. ^ "202". Http Status Codes Cheat Sheet Except when responding to a HEAD request, the server SHOULD include an entity containing an explanation of the error situation, and whether it is a temporary or permanent condition.
Retrieved 16 October 2015. ^ "HTTP Error 505 - HTTP version not supported". Http Response Example No indication is given of whether the condition is temporary or permanent. The 202 response is intentionally non-committal. https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html The method requires authentication but it was not presented or was wholly invalid.226This request looks like it might be automated.
IETF. Http Code 403 Retrieved 13 February 2016. ^ "300". Copyright © 2016 DigitalOcean™ Inc. Docs.cpanel.net.
The authenticated user account is not muting the account a call is attempting to unmute.354The text of your direct message is over the max character limit.Corresponds with HTTP 403. https://en.wikipedia.org/wiki/List_of_HTTP_status_codes The proxy MUST return a Proxy-Authenticate header field (section 14.33) containing a challenge applicable to the proxy for the requested resource. Http Status Code 400 Retrieved 16 October 2015. ^ "RFC2616 on status 413". Http Code 302 Iana.org.
Except when responding to a HEAD request, the server SHOULD include an entity containing an explanation of the error situation, and whether it is a temporary or permanent condition. this content A client MUST be prepared to accept one or more 1xx status responses prior to a regular response, even if the client does not expect a 100 (Continue) status message. The proxy MUST return a Proxy-Authenticate header field (section 14.33) containing a challenge applicable to the proxy for the requested resource. Unless it was a HEAD request, the response SHOULD include an entity containing a list of resource characteristics and location(s) from which the user or user agent can choose the one most appropriate. Http 504
This response is primarily intended to allow input for actions to take place via user input, followed by a clearing of the form in which the input is given so that the user can easily initiate another input action. If you feel that the Tweet or DM you attempted to create was flagged in error, please report the details around that to us by filing a ticket at https://support.twitter.com/forms/platform.231User must verify loginReturned as a challenge in xAuth when the user has login verification enabled on their account and needs to be directed to twitter.com to generate a temporary password.251This endpoint has been retired and should not be used.Corresponds to a HTTP request to a retired URL.261Application cannot perform write actions.Corresponds with HTTP 403 — thrown when the application is restricted from POST, PUT, or DELETE actions. As from the point of view of the clientand the HTTP transaction the other service is hidden within the server, this maybe treated identically to Internal error 500, but has more diagnostic value. http://orgias.org/http-status/http-error-code-449.html The 303 response MUST NOT be cached, but the response to the second (redirected) request might be cacheable.
If it has Internet access, then you could see a 503 in certain situations.The 503 Service Unavailable error displays inside the browser window, just as web pages do.Cause of 503 Service Unavailable ErrorsMost of the time, a 503 error occurs because the server is too busy or because there's maintenance being performed on it.Note: Sites that use Microsoft IIS may provide more specific information about the cause of a 503 Service Unavailable error by suffixing a number after the 503 as in HTTP Error 503.2 - Service Unavailable which means Concurrent request limit exceeded. Http 502 Drupal. This response is primarily intended to allow input for actions to take place via user input, followed by a clearing of the form in which the input is given so that the user can easily initiate another input action.
HTTP, FTP, LDAP) or some other auxiliary server (e.g. Also note that some servers merely shut down the connection without sending this message. 409 Conflict This response would be sent when a request conflict with current state of server. 410 Gone This response would be sent when requested content has been deleted from server. 411 Length Required Server rejected the request because the Content-Length header field is not defined and the server requires it. 412 Precondition Failed The client has indicated preconditions in its headers which the server does not meet. 413 Payload Too Large Request entity is larger than limits defined by server; the server might close the connection or return an Retry-After header field. 414 URI Too Long The URI requested by the client is longer than the server is willing to interpret. 415 Unsupported Media Type The media format of the requested data is not supported by the server, so the server is rejecting the request. 416 Requested Range Not Satisfiable The range specified by the Range header field in the request can't be fulfilled; it's possible that the range is outside the size of the target URI's data. 417 Expectation Failed This response code means the expectation indicated by the Expect request header field can't be met by the server. 421 Misdirected Request The request was directed at a server that is not able to produce a response. The HTTP/1.0 specification (RFC 1945) required the client to perform a temporary redirect (the original describing phrase was "Moved Temporarily"), but popular browsers implemented 302 with the functionality of a 303 See Other. Http 422 The entity returned with this response SHOULD include an indication of the request's current status and either a pointer to a status monitor or some estimate of when the user can expect the request to be fulfilled. 10.2.4 203 Non-Authoritative Information The returned metainformation in the entity-header is not the definitive set as available from the origin server, but is gathered from a local or a third-party copy.
It is a MIME format object. RFC 4918. The user might be logged in but does not have the necessary permissions for the resource. 404 Not Found The requested resource could not be found but may be available in the future. mrGott.
httpstatus. It is non-committal, meaning that there is no way in HTTP to later send an asynchronous response indicating the outcome of processing the request.