Update a software that has been downloaded with an apple ID associated with a deleted email address I am trying to update XCode. When I go on the AppStore and try to update XCode I receive the following message:

You have updates available for other accounts

Sign in to &lt;email.address@PastUniv.com&gt; to update applications for that account.


email.address@PastUniv.com is an address email I had in my previous university and this email address has now been canceled!

How can I update XCode with the Apple ID I am using today?
As long as you don't have any user data stored within the xCode.app file structure, just delete the xCode app.  Then re-download it from the AppStore using your new AppleID.