If you are not able to update apps and are not aware of it as your automatic updates are not happening. Then, there is nothing to worry about you can just try the simple method that is listed below. Steps to be followed : 1. Go to your App store. 2. Click updates which you can see in your sidebar. 3. Click update for any particular app or you can click update all for the update of all apps. 4. After that, you will be able to manually update apps on Mac.