If you have been given access to someone else's contacts.  Here's what you need to do to be able to see it in your own mailbox:

  • Select File tab > Open & Export > Other User's Folder
  • Type in the name of the user or click on Name… and find in the address book. Choose Folder Type: Contacts
    open other user's folder
  • Click OK
  • If you navigate to People on the bottom of outlook you should see a Shared Contacts section with users name added and their contacts. 

Content by label

There is no content with the specified labels