HTTP 500 error message displays instead of ASP error message / ASP debugging mode

To enable ASP debugging

1.


In IIS Manager, double-click the local computer, right-click the Web Sites folder or an individual Web site folder, and then click Properties.


Configuration settings made at the Web Sites level are inherited by all of the Web sites on the server. You can override inheritance by configuring the individual site or site element.

2.


Click the Home Directory tab, and then click Configuration.

3.


Click the Debugging tab, and then select the Enable ASP server-side script debugging check box.

4.


Click Send detailed ASP error messages to client if you want to send the client very detailed debugging information, or click Send the following text error message to client and type the text you want to send to the client.

5.


Click OK.


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You can also customize the 500 internal error created by the IIS using 500-100.asp file.


Note The 500-100.asp file should not be implemented on production Web sites. The 500-100.asp file may expose custom code to users.

To use the 500-100.asp file for error handling on the nondefault Web site(The website for which you wish to setup this functionality), perform the following steps:

1. Start the Internet Service Manager (ISM), which loads the Internet Information Services snap-in for the Microsoft Management Console (MMC).
2. Right-click the appropriate Web site, click New, and then click Virtual Directory.
3. In the Virtual Directory Creation Wizard, click Next. In the Alias text box, type IISHelp, and then click Next.
4. When you are prompted for the path to the content directory, click Browse, select the C:\Windows\Help\IisHelp folder, and then click Next.
5. On the Access Permissions page, accept all the defaults, click Next, and then click Finish. Give Read permission only.
6. Right-click the Web site again, and then click Properties.
7. On the Custom Errors tab, select the 500;100 error line, and then click Edit Properties.
8. In the Message Type list box, select URL, and then type /iisHelp/common/500-100.asp in the URL text box.
9. Click OK twice to return to the ISM.