We have migrated my SharePoint 2010 application to SharePoint 2013. We are using two Active Directory with same users and security groups. We have done trust relationship between both the ADs.
After migration we are able to see all the users of both the domains and groups of current domain in which my SharePoint 2013 server is installed but we are not getting security groups of second AD in people picker.
Some of the AD groups of second domain are already present in permission as it was added in SharePoint 2010 before migration but users of these group are not able to access SharePoint 2013 site (Showing Access Denied Error).
Please suggest me solution if anybody had seen this issue before.