Mac App Store purchases are missing

When I click on the tab Purchases in the Mac App Store, I'm missing purchases that I've never removed.

How can I get them back to show in the purchase history?


Solution 1:

In the Mac App Store go to...

  1. Store → View my account
  2. In the section iTunes in the Cloud click on View hidden Purchases.
  3. Choose which purchases you want to unhide.