8.1.4 Disconnecting Users from Open Files
When you make changes to the NTFS permissions for a file that is currently opened by a user, the new
permissions will not affect the user until he or she closes and then attempts to reopen the file as a user
retains all permissions for a shared resource that Windows Server 2003 assigned when the user connected to
it. These permissions are evaluated again the next time that a connection is made.
Note: Disconnecting users from open files can result in data loss. To prevent
data loss you should notify users that are connected to shared folders or files
that there will be a disruption to the computer or resource availability.