Refresh the apps for Office list
After you hide or retrieve an app for Office, the apps list should update automatically so only your active apps show up. If the list doesn’t automatically update, you can manually refresh the list.
In Word, Excel, or PowerPoint, click Insert > My Apps.
In Project, click Project > Apps for Office.
Under Apps for Office, click My Apps to see your list of apps, and then click Refresh to update the list.