How to Prevent macOS High Sierra from Automatically Downloading

If you’re on a Mac with recent macOS release (Sierra or El Capitan), then Apple is defaulting to try and automatically downloading the 5GB installer for macOS High Sierra in the background to your computer. When the download completes, the Mac then sends you a notification suggesting that High Sierra is ready to install, with the notification only having two options; “Install” and “Details”. Some users may find this convenient to automatically download a major software update and casually suggest to install it onto a Mac, but other users may be less than excited about this behavior, particularly if you’re not yet ready to install macOS High Sierra onto a computer.
If you do not want macOS High Sierra to be automatically downloaded onto a Mac, maybe because you’re avoiding the macOS update or postponing it while a particular bug or issue is sorted out, we’ll walk through a few steps on how to prevent a Mac from automatically downloading the MacOS High Sierra installer.

















