Ongoing issue with trying to install Apple updates via Mac App Store
Mac App Store is essentially broken when installing Apple updates.
For the longest time I couldn't install Remote Desktop Client 3.8.2: See Remote Desktop Client 3.8.2 keeps reappearing in App Store. It finally worked when I reinstalled the OS.
People know the symptoms:
1. Update begins, progress bar shows briefly, then cancels out.
2. Duplicate records of the update show up in Updates Installed in the Last 30 Days.
Now it's starting all over again with iTunes 12.1.2. Of course, I immediately downloaded it from the Apple site instead, but is this problem ever going away? My wife couldn't update from 10.10.1, I couldn't update Remote Desktop, now I can't update iTunes 12.1.2, and a coworker can't update to 10.10.3, all with the same symptoms.
MacBook Pro with Retina display, OS X Yosemite (10.10.3), Early-2013