I ran across this problem with an ASP page and found a solution on the Microsoft Support site.
Active Server Pages (ASP) page, ASP.NET page, Internet Services API (ISAPI) application, or Common Gateway Interface (CGI) application on a Windows Server 2003 server running Internet Information Services (IIS) 6.0, give the following error messages:
- HTTP Error 404 – File Not Found
- HTTP Error 404 – File or Directory not found
IIS 6.0 was set to serve only static HTML pages by default on Windows Server 2003
Using the IIS manager Allow Active Server Pages under the Web service extensions node.