How to update someone else's Apple ID downloaded by Xcode

When our Apple ID is someone else, we need to update xcode after borrowing to find AppleID account is someone else, this time can be resolved in the following way:

1. Open the Reference program directory

2. Find Xcodeand right-click "Show Package Contents"

3. Locate the _masreceipt folder

4. Delete it and then exit restart Appstroeto update Xcode .

Original : Http://apple.stackexchange.com/questions/53648/mac-app-store-how-to-check-which-account-was-used-to-buy-app

How to update someone else's Apple ID downloaded by Xcode