http://kb.juniper.net/InfoCenter/index?page=content&id=KB22669
How to disable the automatic launch of Junos Pulse when Windows boots up?
SOLUTION:
The Junos Pulse application has to be disabled from the startup services of Windows.Go to Start > Run and type msconfig. On the System configuration Utility window, under the Startup tab, uncheckPulse, click Apply and then OK. Windows will automatically restart.
Now Junos Pulse will not automatically start; users will have to manually start it.