Among other features, Oracle VM VirtualBox supports the following: Permission is granted to top level folders only and is inherited by sub folders. Folder permissions control the level of access a user has to the contents of a top level folder and its subfolders. The folder is still shared out, but no one can access it. That worked for about another 15 minutes, and the quite again. I shared out the c:\Windows\System32\spool\PRINTERS directory and gave domain user full control of that folder.
And then it works for about 15 to 20 minutes, and the stops working again.