http://blogs.technet.com/b/odsupport/archive/2010/08/17/office-2010-activation-errors-0xc004f074-quot-no-key-management-service-kms-could-be-contacted-quot-and-0xc004f050-quot-the-software-licensing-service-reported-that-the-product-key-is-invalid-quot.aspx