QUOTE(Ridz Ria @ Feb 6 2013, 04:01 PM)
It is a server error code which is returned by the server what a particular webpage or the file is missing from the webhost server.
A 404 error is returned by a web server (the machine where a website is hosted) when it cannot find the page you have requested. The most likely cause of this error is a mistyped URL.
If you get a 404 error when accessing a website, first check to make sure that you have not mistyped the URL in the address bar of your web browser.