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Mac User Guide
- Welcome
- What’s new in macOS Sequoia
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- Intro to Continuity
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Control your iPhone from your Mac
- Copy and paste between devices
- Stream video and audio with AirPlay
- Make and receive calls and text messages on your Mac
- Use your iPhone internet connection with your Mac
- Share your Wi-Fi password with another device
- Use iPhone as a webcam
- Insert sketches, photos and scans from iPhone or iPad
- Unlock your Mac with Apple Watch
- Use your iPad as a second display
- Use one keyboard and mouse to control Mac and iPad
- Sync music, books and more between devices
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- Control what you share
- Set up your Mac to be secure
- Allow apps to see the location of your Mac
- Use Private Browsing
- Keep your data safe
- Understand passwords
- Change weak or compromised passwords
- Keep your Apple Account secure
- Use Mail Privacy Protection
- Use Sign in with Apple for apps and websites
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
If an app is not from the Mac App Store
If you see a dialogue stating “The app is not from the Mac App Store”, the app you tried to open wasn’t downloaded from the Mac App Store.
You can change your settings to allow apps from known developers.
On your Mac, choose Apple menu
in the sidebar. (You may need to scroll down.)Go to Security, click the pop-up menu next to “Allow applications from”, then choose App Store & Known Developers.
If you’re still unable to open the app, see Open an app by overriding security settings.
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