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Keynote: How to disable applications from opening during a Keynote presentation
Learn how to disable applications from opening during a Keynote presentation.
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.
Open Keynote.
Open the Preferences Window (Keynote > Preferences...).
Select the Slideshow tab.
Deselect Allow Exposé, DashBoard and others to use screen as shown in the screenshot below.
![No alt supplied for Image](https://cdsassets.apple.com/live/7WUAS350/images/mac-apps/keynote/preferences_window.png)
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