I just got a new MacBook Air to replace my recently deceased Mac Mini.
The app store reported updates that were needed and I dutifully clicked “Update All”.
When the system got to GarageBand it reported:
“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.”
Say what? It’s a brand new computer (loaded with data from Time Machine from my old computer). Also - I’ve never used GarageBand. I waited all week to see if anything changed, but apparently not.