The basic 404 error or file not found page serves two specific purposes. Firstly, to alert the user that the item they were expecting is not currently available, rather than the generic page your host may provide or worse the generic windows file not found page. Secondly, to alert the webmaster that a file is missing or a link is targeting something incorrectly. In order to provide users with a page that will show up whenever a 404 error occurs you need to change the settings on your web server to target a specific page or contact your hosting company to do this for you.

CoverYourASP.com has made a name for itself by being the first major Active Server Pages tutorial site to allow readers to download the entire web site and run it on their computers.

The basic 404 error or file not found page serves two specific purposes. Firstly, to alert the user that the item they were expecting is not currently available, rather than the generic page your host may provide or worse the generic windows file not found page. Secondly, to alert the webmaster that a file is missing or a link is targeting something incorrectly. In order to provide users with a page that will show up whenever a 404 error occurs you need to change the settings on your web server to target a specific page or contact your hosting company to do this for you. Once setup, the location of any file that is requested and not found n the server will be made available as a query string value and can be outputted as a message to the webmaster. Sending a message to the webmaster can be done a number of ways this example demonstrates the use of CDONTS. This example has the mail portion commented out as not to generate a mail message during this example.

It is important to know what is going on with your site in development and production. By implementing proper error logging, you can quickly track down errors, and provide your team members with enhanced error information. With the new ASP Error object you can create a simple and effective logging system.

Everyone has seen an HTTP 404 error at some point. You follow a link on a web page, and BOOM - File not found. Perhaps the author spelt it incorrectly, or the page was uploaded to the server by mistake.