File Share is required to install a workstation, but can later be disabled
  1. Open Windows Explorer (right-click the Start button, choose Explore)
  2. Select Folder Options from the Tools menu
  3. On the View tab near the bottom, uncheck Use simple file sharing
  4. Reboot the workstation if necessary

Note: If the file system is not NTFS, the Security tab will not be available; FAT and FAT32 do not support file-level security