Prevents users from starting Task Manager (Taskmgr.exe). If this setting is enabled and users try to start Task Manager, ...

Prevents users from starting Task Manager (Taskmgr.exe).

If this setting is enabled and users try to start Task Manager, a message appears explaining that a policy prevents the action.

Task Manager lets users start and stop programs; monitor the performance of their computers; view and monitor all programs running on their computers, including system services; find the executable names of programs; and change the priority of the process in which programs run.