I was told to upgrade my Xcode 9 to 9.1 but when I tried it in App Store it says

Xcode can’t be installed on “Macintosh HD” because macOS version 10.12.6 or later is required.

But that is not the problem, my OS is macOS 10.12.5 Sierra, I decided to click the Update button of Software Update in App Store but when my computer is about to restart, I cancelled it when it prompts to close Terminal.

Why I cancelled it? It's because I remembered my Supervisor saying not to upgrade our OS. What should I do to cancel the update which is only waiting for my computer to restart? Me and my colleague has the same macOS but he doesn't have any problem upgrading Xcode. Please help!

In App Store, the button says Restart instead of Upgrade so now I'm scared lol

P.S. Hey guys I figured out there's really nothing to worry about because when I shut down my computer, there's a prompt saying wether I Shut Down or Install Updates and Shut Down. I chose Shut Down and that solves the problem. And also relating to the Xcode Upgrade problem, the answer is in the comment.

  • This is a minor update meaning you're still running Sierra. Finish the update.
    – Allan
    Oct 23, 2017 at 11:41
  • That's what my Supervisor told me! To download the minor update of Sierra! Thanks! Oct 25, 2017 at 2:31

1 Answer 1


try deleting the .dmg file installer, maybe here ~/Library/Application Support/AppStore but I'm not sure of the position.. also you can make a search of .dmg and order by date

  • Thanks for your suggestion but I cannot find a .dmg file in that directory. Oct 25, 2017 at 2:21

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