The GetLastError method returns an ASPError object that describes the error condition that occurred.
By default, a Web site uses the file \iishelp\common\500-100.asp for processing ASP errors. You can either use this file, or create your own. If you want to change the ASP file for processing the 500;100 custom errors you can use the IIS snap-in.
Note: A 500;100 custom error will be generated if IIS encounters an error while processing either an ASP file or the application's Global.asa file.
Note: This method is available only before the ASP file has sent any content to the browser.
In the example an error will occur when IIS tries to include the file, because the include statement is missing the file parameter:
In this example an error will occur when compiling the script, because the "next" keyword is missing:
In this example an error will occur because the script attempts to divide by 0: