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.

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