A 404 Error, commonly referred to as a ‘404 Not Found’ error, is an HTTP status code that indicates that the web page you were trying to reach could not be found on the server. It is a standard response code in the realm of the internet, signifying that the client was able to communicate with the server, but the server could not find what was requested. This error message can occur for several reasons: the page may have been removed or moved, and the URL was not changed accordingly; the page’s URL might have been typed incorrectly; or the server responsible for the website is not running or the connection is broken. A 404 error is often customized by individual websites to inject some humor or branding to soften the inconvenience for users. From a marketing perspective, it’s important to monitor these errors and correct any broken links, as they can impact user experience and search engine rankings.