I can confirm that the locally created cookie is usable by IE on http://localhost:portno/myapp.com
But when I open http://www.AnyInternetDomain.com/Default.aspx then IE does not see that cookie.
I can confirm that the locally created cookie is usable by IE on http://localhost:portno/myapp.com
But when I open http://www.AnyInternetDomain.com/Default.aspx then IE does not see that cookie.