In Outlook 2013, the folder view is showing my Calendar and Contacts with a number to the right of it. I assume this means there are "unread" items in Calendar and Contacts. Perhaps my assumption is wrong on what these numbers are, but I want the numbers to be hidden. How do I do this?
When you do that, it brings up a new ribbon of Search Tools.
The unread calendar items will be listed below.
If the Ctrl+Q doesn't work for some reason, an alternative is to (after selecting all found messages via CTRL+A):
All the unread calendar items will now open.
All the open calendar items and outlook itself will now close. Next time you open Outlook, all there will not be any unread calendar items.
In the search bar, type "read:no" and it will bring up all Outlook items that are unread.