macOSHigh Sierra Download. If you want to install macOS High Sierra on your device, you should download macOS High Sierra installer first. In general, you can go to App Store to search and download macOS High Sierra installer. However, some people report that they fail to find the macOS High Sierra download in App Store. Ifyou're using Lion (10.7) or Mountain Lion (10.8), you will need to upgrade to El Capitan (10.11) first before you could upgrade to macOS Catalina. 5. Begin installation. Once the download is completed, the installer will open automatically. Simply click Continue and follow the onscreen instructions. goto the Applications folder locate Install macOS ******.app. Move it to the Trash, empty the Trash. Restart, click on the link again, the App Store should say 'Get' or 'Download'. If you are considering upgrading to Catalina be warned it does not support 32bit apps. Upgradeto Microsoft Edge to take advantage of the latest features, security updates, and technical support. Twitter LinkedIn Facebook Email. Unable to install office in MacOS High Sierra. Chesus Monforte Hernandez 1 Reputation point. 2021-01-22T+00:00. I just got my MacBook formatted after a problem with the hard drive and when Toupgrade macOS: Back up your Mac with Time Machine. In the App Store, open the macOS Big Sur or macOS Monterey. Select Get to download the installer. After the download is complete, the installer opens automatically. Follow the prompts to install macOS. We strongly recommend not installing macOS Ventura, the operating system that follows gLsggC.

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