Updated: February 7, 2008
You can use this procedure to enable or disable a user's ability to share files within his or her profile.
A member of the Administrators or Network Configuration Operators group can enable or disable network sharing. This Group Policy setting affects only the users or groups to which it is applied, and prevents that user or group from sharing their folders even if folder sharing is enabled at the computer level.
By default, this setting is not configured. If you enable this setting, users will not be able to share files within their profile.
Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure.
Start Group Policy Management Console (GPMC). To do so, click Start, and then in the Start Search box, type gpmc.msc.
gpmc.msc
In the navigation pane, open the following folders: Local Computer Policy, User Configuration, Administrative Templates, Windows Components, and Network Sharing.
In the details pane, double-click Prevent users from sharing files within their profile.
Do one of the following:
Click OK to save your changes.