I am having the following error:
Failed to load resource: the server responded with a status of 401 (Unauthorized) http://localhost/App/AngularJS/angular.min.js
Also I have set the read/write/modify access for "IUSR" & "IIS_IUSR" users of whole project.
this was enough for me to get around the same issue.
PS. sorry for using your image, just want to emphasize the step you mentioned that worked for me.