After losing my connection while downloading Xcode 4.2.1, the App Store has removed it from available updates and under purchases it says I am up to date (even though the date of the my installed version is before the latest update date). I have tried to do:

defaults write com.apple.appstore ShowDebugMenu -bool true

And then use the Debug menu item after restarting the App Store using these instructions:


Is there any other way to directly download 4.2.1 or to force the App Store to clear its cache, short of removing Xcode entirely?

  • i know this will seem too obvious, but it saved me with a botched mavericks. could there be an 'install xcode' app in your applicaitons folder -- or something similar? Commented Sep 5, 2014 at 23:41

1 Answer 1


Click on Purchases by keeping the ⌥ key pressed (option key). It will need 10 seconds to initiate the tab (more or less), but afterwards you'll be able to re-download any purchased app.

  • I found that too in the link above, but it still shows all my purchases with "installed" next to the old xcode. Commented Dec 6, 2011 at 9:18
  • Even if you wait a lot of time with the ⌥ key pressed? And what about the "Check for unfinished downloads" menu item?
    – Gio
    Commented Dec 6, 2011 at 10:33
  • nope, it saws all purchases complete. I think you need to uninstall before you can install a purchase... Commented Dec 6, 2011 at 13:19

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