The HTTP 404 "Not Found" error code signifies a client-side error where the requested resource (like a web page) could not be located on the server. It indicates a broken link or an incorrect URL, not a security threat or a governmental restriction. - Additional Information HTTP status codes are a set of three-digit numbers that are part of the Hypertext Transfer Protocol (HTTP). They are used to indicate the status of the server's response to a client's request. - 1xx: Informational - 2xx: Success - 3xx: Redirection - 4xx: Client Error (e.g., 404 Not Found, 403 Forbidden) - 5xx: Server Error (e.g., 500 Internal Server Error)