OS X Mountain Lion: "We could not complete your purchase. OS X Mountain Lion is not compatible with this computer" alert when installing

When attempting to install OS X Mountain Lion via the Mac App Store, an alert may appear.

"We could not complete your purchase. OS X Mountain Lion is not compatible with this computer"

This can happen:

  • When attempting to download OS X Mountain Lion from the Mac App Store on certain Macs that shipped with OS X Mountain Lion preinstalled
  • If your Mac does not meet the system requirements for OS X Mountain Lion

Solution

Last Modified:
Helpful?

Additional Product Support Information

Start a Discussion

in Apple Support Communities
See all questions on this article See all questions I have asked
United States (English)