When opening the Web service's HTML description or pages, or invoking a method with a web browser, an "HTTP 404 - File not found" message appears.
DISCUSSION
This error condition can often be solved by addressing the following:
Verify that ASP.NET Application Server component is installed and enabled. In IIS 6 Manager, expand the local computer, then click Web Service Extensions, then in the details pane verify that the status for ASP.NET is Allowed.
Open the properties of the Web service virtual directory in Internet Information Services (IIS) and make sure that the Execute Permissions for the directory are set to allow scripts to be run (i.e. "Scripts only" or "Scripts and Executables").
