Exchange 2007 Access Denied when installing Mailbox Role on server 2008 R2
May 28, 2011
Steven Whiting
Right click the setup on the exchange DVD and set the compatibility to Vista SP2. Odd, but works.
http://www.kapie.com/blog/CommentView,guid,f492b5db-c84f-4949-ad6b-82d458558936.aspx