Scenario: DomainA (Forest A) Hosts internal users DomainB (Forest B) bidectional trust to DomainA Reporting Services running under a DomainA\serviceAccount) Analysis Services running under the same DomainA\serviceAccount DomainC (ForestB) bidirectional trust to Domain B Hosts external users Will Kerberos work in this scenario to propagate the user identity for both internal and external users to Analysis Services? Teo Lachev, Prologika LLC http://www.prologika.com

Hi Teo, Thanks for posting here. > Will Kerberos work in this scenario to propagate the user identity for both internal and external users to Analysis Services? Yes, domain A and C should trust each other in this scenario if the domain level is Windows server 2000 or above version in your environment. Domain Trust Transitivity has been supported since Windows server 2000. For more information please refer to the link below: Understanding Trust Transitivity http://technet.microsoft.com/en-us/library/cc754612.aspx Thanks. Tiger Li TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Teo, Please feel free to let us know if the information was helpful to you. Thanks, Tiger Li TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.comPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.