I currently have a Mac set up so that when a user logs on, it automatically copies everything from their personal DMG's application support folder to the system's app support folder (it's using deep freeze), and vice versa when they log off. However, I'm having trouble with Chrome and Drive in particular. When it launches after the copy operation, it asks for the sync passphrase, then asks the user to log in with their Google account. Therefore, is there some special file in which authentication information like that is stored that isn't being copied?