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macOS User Guide
- Welcome
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- Use Continuity across your devices
- Use your iPad as a second display
- Hand off between devices
- Insert photos and scans from iPhone or iPad
- Insert sketches from iPhone or iPad
- Copy and paste between devices
- Use Apple Watch to unlock your Mac and approve requests
- Make and receive phone calls on your Mac
- Control accessories in your home
- Send files between devices with AirDrop
- Use AirPods with your Mac
- Stream content to Apple TV
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- Understand passwords
- Use keychains to store passwords
- Reset your Mac login password
- Set up your Mac to be secure
- Guard your privacy
- Protect your Mac from malware
- Use Sign in with Apple for apps and websites
- Clear your Safari browsing history
- Manage cookies and other website data in Safari
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
Reinstall apps that came with your Mac
If an app is damaged or not working, you can try to reinstall it.
To reinstall an app that came with macOS (for example, Music, Photos, Calendar, Safari and more), reinstall macOS.
Reinstalling macOS doesn’t erase your information.
To reinstall an app from the App Store, see the App Store User Guide.
If the apps came on a disc and don’t appear in the App Store, use the disc to reinstall them.
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