Ever feel you're in the wrong place 404 (Page Not Found) Error If you're the site owner, one of two things happened: 1) You entered an incorrect URL into your browser's address bar, or 2) You haven't uploaded content. If you're a visitor and not sure what happened: 1) You entered or copied the URL incorrectly or 2) The link you used to get here is faulty. (It's an excellent idea to let the link owner know.)