I will suggest to go through the document below and check if you are missing anything..
http://blog.jamiebaldanza.org/wp-content/uploads/2012/04/Crystal-2011-AD-Authentication.pdf
I will suggest to go through the document below and check if you are missing anything..
http://blog.jamiebaldanza.org/wp-content/uploads/2012/04/Crystal-2011-AD-Authentication.pdf