JSI Tip 4438. How can I prevent a user from using the Task Scheduler in Windows XP?

You can prevent a user from gaining access to the Scheduler service by:

1. Using the Registry Editor to navigate to either of the following keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Task Scheduler5.0

HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Task Scheduler5.0

2. On the Edit menu, Press New and DWORD. 

3. Type the Value Name Execution and press Enter.

4. Double-click the Execution Value Name and set the data value to 1.

5. Press OK.

6. Exit the Registry Editor.