>I have recently converted a web application to .NET 4. I am attempting to deploy it to my Windows 2003 server. Now I have successfully deployed it to a Windows 2008 Server and another Windows 2003 Server (for testing purposes). But when I deploy it to my production Windows 2003 Server (running IIS 6), I get an error, namely:
>
>HTTP Error 404 - File or directory not found.
>
>How can I determine what file or directory is causing this problem? Or what am I missing?

The Event Viewer should have a descriptive information on that issue.