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Q: error message To update this application, sign in to the account you used to purchase it - what do i do?
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Jan 8, 2013 5:33 AMby seventy one,Take a look at this .. .Troubleshooting the Mac App Store
You have to update an app using the same ID as was used when it was purchased. If a family member or friend downloaded the app originally, then you must use the same ID as they used.
