If you've upgraded to macOS Mojave or later, follow these steps to keep it up to date:
Tip: The 64-bit version is installed by default unless Office detects you already have a 32-bit version of Office (or a stand-alone Office app such as Project or Visio) installed.In this case, the 32-bit version of Office will be installed instead. To change from a 32-bit version to a 64-bit version or vice versa, you need to uninstall Office first (including any stand-alone Office apps. With amazing new capabilities and updates to features you use every day, iOS 8 is the biggest iOS release ever. Learn more about iOS 8; The latest version of OS X features an elegant design, includes enhancements to the apps you use most, and enables your Mac and iOS devices to work together in new ways. Download software for Mac. Download VLC media player, Soundflower, Google Chrome and more.
To find updates for iMovie, Garageband, Pages, Numbers, Keynote, and other apps that were downloaded separately from the App Store, open the App Store on your Mac, then click the Updates tab.
To automatically install macOS updates in the future, including apps that were downloaded separately from the App Store, select ”Automatically keep my Mac up to date.” Your Mac will notify you when updates require it to restart, so you can always choose to install those later.
If you're using an earlier macOS, such as macOS High Sierra, Sierra, El Capitan, or earlier,* follow these steps to keep it up to date:
To automatically download updates in the future, choose Apple menu > System Preferences, click App Store, then select ”Download newly available updates in the background.” Your Mac will notify you when updates are ready to install.
* If you're using OS X Lion or Snow Leopard, get OS X updates by choosing Apple menu > Software Update.
Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS.