JSI Tip 10223. How can I troubleshoot an 'HTTP 500 - Internal Server Error'?

Microsoft Knowledge Base Article 311766 contains the following summary:

The following error message indicates that a problem has occurred on the Web server that hosts the Web site at the time the error is returned:

HTTP 500 - Internal Server Error

This article describes how to troubleshoot these errors. This article is intended for Web site administrators. These errors have a number of causes and can effect many different system configurations. The procedures that are described in this article must be performed by a member of the Administrators group on the server.

End users that experience these errors should notify the Web site administrator of the problem.