Calendar starts up every time I boot up Mavericks. I cannot find a related option in its Preferences or in the Users and Groups login items page. How do I prevent Calendar from starting up when I log in to Mavericks?


Right-click on the calendar in the dock, select Options, and de-select Open at Login

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  • I have this exact problem with Sierra - but the "Open at Login" option is not checked. :-/ – zaTricky Nov 16 '16 at 5:38

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