Adding a User to GP Security
I created a web application that used Web Services to return a list of purchase orders. The app ran fine locally but once I published it (to our internal server) I received an error. Here is a screenshot of App with error and Dynamics Web Service Exception Console (Fred is the server that the app is published to).
This is the result of the app using the Default App Pool with the identity of Application Pool Identity which GP knows nothing about. The solution is to create a new user in Active Directory, create a new app pool in IIS using the new user, add your app to the new pool and finally add the new user to GP security.