Your network contains an Active Directory domain named contoso.com. All domain controllers run Windows Server 2012 R2.
You need to ensure that the local administrator account on all computers is renamed to L.Admin.
Which Group Policy settings should you modify?（）

Your network contains an Active Directory domain named contoso.com. The domain contains a file server named Server1 that runs Windows Server 2012 R2. Server1 contains a shared folder named Share1. Share1 contains the home folder of each user.
All users have the necessary permissions to access only their home folder.
The users report that when they access Share1, they can see the home folders of all the users.
You need to ensure that the users see only their home folder when they access Share1.
What should you do from Server1?（）