How to update Xcode with a new Apple ID?
Assuming you have the issue where you are getting the error
To update this application, sign in to the account you used to purchase it.
on the App Store app, go to Store --> Sign Out
and then do the stuff suggested here
check this fix from Beartech at https://discussions.apple.com/thread/2794280?start=15&tstart=0
The App Store used Spotlight in some way. My fix was to add the entire HD to the "Privacy" tab in the Spotlight System prefs pane, close the prefs and wait 30 seconds, re-open and remove your HD from the Privacy tab. Spolight begins reindexing. Re-opened the App Store and problem was fixed! Posting this here for others who might search later on. Also filed a bug report with Apple.
hope this fixes the issue for you!
edit: I think this is a different issue compared to what I had. Your only option is probbaly to delete xcode, and download with your new Apple ID
To make the AppStore forget the old credentials with which the app was downloaded, you must remove the _MASReceipt directory in the app itself.
To do this:
- Open Finder and navigate to Applications,
- Ctrl+Click XCode and choose "Show Package Contents",
- Expand the Contents directory and click _MASReceipt to select it,
- Type Command+Delete to delete the directory permanently---you will be prompted for your credentials since this is a protected file.
Quit and restart AppStore, then find XCode. The button should now say "Free" or "Install" instead of "Update". Clicking it will update your XCode to the latest version as the currently logged-in Apple user.