![]() When requesting information from the server, the browser or client also includes a specification requesting the format it wants the information returned. It would indicate an issue with the client software. This error is rarely seen as it specifically indicates that the email client that is being used is attempting to access the server via a prohibited method. For more information on 404 errors, please review the following article: Error 404 should not be confused with "server not found" or similar errors in which a connection to the destination server cannot be made at all. This response code is an error page that indicates the visitor could communicate with the server, but either the server could not find what was requested or was configured not to fulfill the request and not reveal the reason. 403 Forbidden or No Permission to Access.For more information on 403 errors, please follow the link below: This is usually due to a scripting or file permissions issue. Unlike a 401 Unauthorized response, authenticating will make no difference. The request was legal, but the server refused to respond to it. Unless you have a good reason to do so, it is not recommended to redirect a 401 error. This is commonly known as password protection. 401: UnauthorizedĪccess to the URL resource requires user authentication, which either has not yet been provided or which has been provided but failed. This almost universally indicates an error with the programming, either in the client or the server. This indicates that the request was not in a format that the server understood and could not be served. When the HTTP request completely fails to conform to the HTTP protocol, the Web server may identify it as malformed and serve this error page. ![]() The request may be incorrect, or the resource may have been removed, but the server is functioning correctly, and the error is that the user is requesting something that is not there.Ĭontinue reading for an index of possible 4XX Client Error Codes. A Client Error Code indicates an issue with the request and that the request itself must be changed to get a different result.įor example, if you get a 404 error code, it means the resource you requested does not exist. This article will cover the following codes:Ĭlient Error Codes begin with the number 4, such as 404 or 403 (two of the most common client-side errors). ![]() There are 5 classes of status codes, and the term error codes specifically refer to the two classes of status codes that indicate these errors. However, your browser will generally only display a status code associated with an error after an attempted action fails. All HTTP requests (the type of requests generated by your browser when you attempt to load a page) generate a status code.
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