In Task Scheduler, you can set up security by assigning a user name and password to a particular task. Once a user name and password are set, the task cannot be canceled or deleted by another user.
Notes
- This security feature is available only on Windows NT.
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You must enter a user name in the Scheduled Task wizard before you can continue scheduling a task. Passwords are not required.
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You can change or set a new password by selecting the Open advanced properties for this task when I click Finish check box in the final screen of the wizard.