When copying Administrative Templates to Windows Server 2012 or 2016 you get and error “destination Folder Access Denied” and you can’t copy the .ADMX or .ADML to the PolicyDedinitions folder.
This Issue happens when using local storage and not Central Store for Administrative Templates.
To fix the Issue, you will need to assign Owner Permissions to the domain Administrators group and Replace all permission on the Drive.
To start the process Right click on the C: Drive -> Properties -> Security -> Advanced
Next to the Owner text click on Change
Select the Domain Administrators Group
Make sure you tick Replace All child objects
When done close all open and copy the administrative templates