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Hi,
I am trying to install an app since my classes have been moved to online but it gives me an error message of we could not complete your purchase, Notability can't be installed on "Macintosh HD" because OS X version 10.13 or later is required. How do I update/install this? I have no idea what I am doing, obviously.
Myrianna
iMac 21.5", OS X 10.11
Hi there, myrianna.
I see that you're having a problem installing an app on your Mac. You receive a message that it can't be completed and that the app needs macOS High Sierra or later. I'm glad to help with this.
How to upgrade to macOS High Sierra -- This article contains the information and steps you need to upgrade your Mac to macOS High Sierra. Pay close attention to the information contained in step 1 to make sure you're able to upgrade your Mac first.
Back up your Mac with Time Machine -- Also, before you begin, please be sure to have a fresh backup to keep your personal information safe.
Take care.
Update/Install to OS X version 10.13 or later
