Keynote: How to disable applications from opening during a Keynote presentation

Learn how to disable applications from opening during a Keynote presentation.

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When delivering a Keynote presentation, you may experience various applications opening unexpectedly. Applications likely to open include Apple Software Update, Exposé, Front Row or any application configured to use a timed launch sequence. To avoid this behavior, disable the ability for any other application to open during a presentation, in Keynote's preferences.

  1. Open Keynote.
  2. Open the Preferences Window (Keynote > Preferences...).
  3. Select the Slideshow tab.
  4. Deselect Allow Exposé, DashBoard and others to use screen as shown in the screenshot below.

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