For computers that use a lot of user and admin shobat is, probably a good idea to disable the control panel as well. In addition to avoiding change settings on the computer, also can be a computer security reasons. But if computers are used in private, then let the control panel remains active.
1. Go to group policy editor by clicking [start] and then type gpedit.msc and press [Enter]. In windows xp can be done by [start]> [Run]> type gpedit.msc> press [enter].
2. After appearing Local Group Policy Editor window, go to the [User Configuration]> [Administrative Templates]> [Control Panel].
3. In the right pane double click on [Prohibit access to the Control Panel].


6. If we forced his way into the control panel through the [Run], it will display a notification like the following picture: This operation has been canceled due the restrictions in effect on this computer. Please contact your system administrator.

“The windows installer service could not be accessed. …… “



