How can one re-download Sierra from the Mac App Store now that High Sierra is out? From Sierra onwards, Apple does not tie these to Apple IDs anymore, so they do not appear under your "Purchased" tab in the Mac App Store. The previous El Capitan is only available under the Purchased tab for those that have previously downloaded it, OR via a direct link from an Apple support document (https://support.apple.com/en-us/HT206886 ), BUT you cannot search and find it directly in the Mac App Store. Have Apple released a new support document with a link to Sierra in the Mac App Store yet? (or does this mean anyone who doesn't have a copy of the Sierra installer, pre-High Sierra's release, is now out of luck??) Sure, all Macs running Sierra can also run High Sierra, but the software certainly doesn't. ...This is a very confusing new system for OS releases.