Blog of "Brian Murphy-Booth" a.k.a. "Brian Booth"

http://www.iis.net/downloads/default.aspx?tabid=34&g=6&i=1887 

PROBLEM:

PROBLEM:

If you have recently upgraded a Visual Studio .NET 2003 ASP.NET application project or a Visual Studio 2005 Web Application project to a Visual Studio 2008 ASP.NET Web Application project you may have noticed the following popup. Needless to say this makes it a little more difficult to connect remotely to your project in order to run and debug it:

Introduction 

An error that most IIS 6.0 administrators have probably encountered is "Event ID: 1009" which usually leads to a "503 Service Unavailable" error being displayed in a browser. "503" usually indicates the Application Pool has been disabled for some reason. The IIS support team frequently gets support calls to help resolve this issue and over the years I have compiled a list of steps I use to troubleshoot this. If the following information seems too confusing please let me know and I'll clarify any confusing points. The follow list is broken down into different sections for the various "exit codes" that are in the Event 1009.

Where is the tool?

Note: All of your Kerberos configuration questions can be answered by using the DelegConfig tool that I wrote. You can find that tool here