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An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.
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403.20 – Passport logon failed; 403.21 – Source access denied; 403.22 – Infinite depth is denied; 403.502 – Too many requests from the same client IP; Dynamic IP Restriction limit reached; 403.50 – Rejected due to IP address restriction
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HTTP 404 is a common error code that indicates a webpage cannot be found. Learn about its causes, solutions, and history on Wikipedia.
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Exit status. In computing, the exit status (also exit code or exit value) of a terminated process is an integer number that is made available to its parent process (or caller). In DOS, this may be referred to as an errorlevel. When computer programs are executed, the operating system creates an abstract entity called a process in which the book ...