Make sure that the Web site address displayed in the address bar of your browser is spelled and formatted correctly. If you reached this page by clicking a link, contact the Web site administrator to alert them that the link is incorrectly formatted. HTTP Error 404 - File or directory not found. Go to Microsoft Product Support Services and perform a title search for the words HTTP and 404 . Open IIS Help , which is accessible in IIS Manager (inetmgr), and search for topics titled Web Site Setup , Common Administrative Tasks , and About Custom Error Messages . read more