We have an existing SSRS server, and have just created a new child domain. We'll be migrating users from the parent to the child, and want to add the users of that new domain with access to SSRS. In the parent domain they are able to access, but after migration with the child domain account, they cannot.
I have added the group CHILD\Domain Users with a system user role on SSRS, and PARENT\Domain Users was already there.
Is there any additional step I should/could take to get this active?