Update not available for this Apple ID
"This update is not available for this Apple ID either because it was bought by a different user or the item was refunded or cancelled."
This is the message I get when I try to install updates on my MacBook Pro. The only thing I've done since my last update was to upgrade my OS to Sierra 10.12.4.
I found another thread from 2014 with this same issue:
Re: his update is not available for this Apple ID
In this thread it sounded like Apple knew about it and was looking into it.
MacBook Pro, macOS Sierra (10.12.4)