Cannot download app from family sharing (app already downloaded) I have recently configured Family Sharing (2 accounts are currently part of it). Most of the apps download just fine, but there are some exceptions.

Example: account A has Twitter in its purchased list; if account B tries to download Twitter from the store, the little cloud icon appears (and this is expected, since the app has indeed been downloaded by a family member already), but the download fails with an error message that says that the app has already been purchased by another user.

Is there a way to solve this?
Ok I found a solution, it's another iOS 8 bug. These are the steps to solve this:


  
  Launch the App Store on your iOS device.
  Select the "Featured" tab and scroll to the bottom.
  Tap on your Apple ID and select "Sign Out."
  Tap on "Sign In" and log in with your Apple ID.
  


Source