An HTTP 404 error occurs when the page that is requested from a web server cannot be found because it does not exist. Users will not be able to directly fix these errors, are they are server-side difficulties. A system administrator will be able to resolve HTTP 404 Errors by creating or renaming the erroneously linked resource and making it available.
Find out what file is missing and not being presented by the server. The location of this file will be in the address bar at the top of the web page. As an example, http://www.mytestsite.com/files/filename.php will be located in the "files" folder of the "mytestsite.com" directory.
Open the web server directory from which the file in question originates.
Make sure the file that is missing or fix the name of a file you want to be presented for this page. If the file requested is "filename.php" you will need to create the file "filename.php" or rename it to exist.