We have two domains; Domain A and Domain B. The SharePoint 2013 server is located in Domain A and users in that domain are currently using the intranet. We would like for users in Domain B to be able to use the SharePoint as well.
Question: How can we configure SharePoint so Domain B user profiles and authentication can access SharePoint?
Currently there's a two-way trust between the two domains (different forests).
I have set up a user profile synchronization to Domain B and in Central Administration I can see the Domain B user profiles.
I have created Universal Security Groups in Domain B which will be used in the SharePoint.
Problem: When I open the permissions for a Document Library, I cannot resolve the users or groups in Domain B. Can someone please help us figure out what's wrong?