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Learn the meaning and usage of HTTP response status codes, which indicate the server's response to a client's request. The codes are classified into five categories: 1xx, 2xx, 3xx, 4xx, and 5xx.
Learn how to fix Temporary Error 20 in AOL Mail, which occurs when you access your account from multiple devices or browsers simultaneously. Find out the possible ...
An error code is a code that indicates the nature of an error and why it occurred. Learn about error codes in computing, communication protocols, automobiles, and more.
HTTP 502 is an error code that indicates a problem with the communication between a proxy or gateway server and an upstream server. Learn the specification ...
Learn the meaning and purpose of the three-digit codes that FTP servers send to clients in response to commands. See the list of all known codes and their categories, such as positive, negative, protected, and syntax.
HTTP 302 Found is a common way of performing URL redirection, inviting the user agent to make a second request to the new URL specified in the header field Location. Learn the history, usage and examples of this status code, and how it differs from 303 and 307.
HTTP 403 is an HTTP status code meaning access to the requested resource is forbidden. Learn the causes, examples, and substatus error codes for IIS of this common ...
HTTP 404 is a standard response code that means the server could not find what was requested. Learn the history, causes, and variations of this common web error, and see how some websites have customized their 404 pages.