: Go to the Apple menu () > About This Mac > System Report > Software > Legacy Software to see which apps will no longer work.
Try each app you rely on:
Post-upgrade checklist
Apple no longer prominently features Catalina on the App Store (it now promotes newer OS versions), but the direct link still works.
: Go to the Apple menu () > About This Mac > System Report > Software > Legacy Software to see which apps will no longer work.
Try each app you rely on:
Post-upgrade checklist
Apple no longer prominently features Catalina on the App Store (it now promotes newer OS versions), but the direct link still works. how to update macos high sierra 10136 to 1015