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If an error occurs while installing an update or upgrade, learn how to resolve installation issues. If you downloaded any apps from the App Store, use the App Store to get updates for those apps. When Software Update says that your Mac is up to date, then macOS and all of the apps it installs are up to date, including Safari, Messages, Mail, Music, Photos, FaceTime, and Calendar. Software Update shows only upgrades that are compatible with your Mac. Upgrade Now installs a major new version with a new name, such as macOS Monterey.Update Now installs the latest updates for the currently installed version, such as an update from macOS Big Sur 11.5 to macOS Big Sur 11.6.If your System Preferences doesn't include Software Update, learn how to upgrade to macOS Monterey or upgrade to an older macOS, and use the Updates tab of the App Store app to get app updates. In the System Preferences window, click Software Update.macOS does a lot every night while your Mac isn’t being used and it is sleeping. The main reason for letting your Mac sleep instead of shutting it down is that your Mac can’t perform maintenance tasks during the night if you shut it down. While, if you are a free or Professional user, Recuva Professional is not free for use. If you are a Professional Plus user, you can use the Recuva Professional to restore your deleted files. From the Apple menu in the corner of your screen, choose System Preferences. Shutting Down Your Mac Keeps It From Running Maintenance Tasks. If CCleaner deleted your files by mistake, you will need to use data recovery software to get them back.Then follow these steps to find and install any available software updates or upgrades.
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Before you get started, it's a good idea to back up your Mac.