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HTTP 403 is an HTTP status code meaning access to the requested resource is forbidden. The server understood the request, but will not fulfill it, if it was correct. The server understood the request, but will not fulfill it, if it was correct.
[19] [20] [21] Sometimes, this status code is also used as a response to a blocked request, instead of the more appropriate 403 Forbidden. [22] [23] 421 Misdirected Request The request was directed at a server that is not able to produce a response (for example because of connection reuse). 422 Unprocessable Content
403 Forbidden The server understood the request, but is refusing to fulfill it. [1]: §21.4.4 Sometimes (but not always) this means the call has been rejected by the receiver. 404 Not Found The server has definitive information that the user does not exist at the domain specified in the Request-URI.
The domain name of the server (for virtual hosting), and the TCP port number on which the server is listening. The port number may be omitted if the port is the standard port for the service requested. Mandatory since HTTP/1.1. [17] If the request is generated directly in HTTP/2, it should not be used. [18]
While both codes indicate that access to a resource is restricted, the distinction lies in the reason for the restriction. The 402 code specifically implies that payment is required, whereas the 403 code implies that access is forbidden due to other reasons, such as insufficient permissions or authentication failure.
Common exceptions include an invalid argument (e.g. value is outside of the domain of a function), [5] an unavailable resource (like a missing file, [6] a network drive error, [7] or out-of-memory errors [8]), or that the routine has detected a normal condition that requires special handling, e.g., attention, end of file. [9]
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A web browser, for example, may be the client whereas a process, named web server, running on a computer hosting one or more websites may be the server. The client submits an HTTP request message to the server.