Click the Close button in the tasks scheduler dialog box.
Select the Close item in the context menu for the 
icon.
To close scheduler:
Click the Close button in the tasks scheduler dialog box.
Select the Close item in the context menu for the icon.
Clicking the Close button in the scheduler dialog box closes only scheduler dialog box, the scheduler continues working and it will be available in the notification area. To fully close the tasks scheduler, select the Close item in the context menu for the icon.
After the running tasks are stopped, if required, refresh settings of task scheduler and start tasks for execution with required parameters.
See also: