How to change the default Address Book

This option controls which address book you see when you open the Address Book (via clicking Ctrl+Shift+B) and when you click the To, Cc, or Bcc buttons when composing e-mails.

To change the default Address Book, do the following:

    1.    On the Home tab, in the Find group, click the Address Book (or click Ctrl+Shift+B):

Find in Outlook 2016

    2.    In the Address Book dialog box, choose Tools -> Options... to open the Addressing dialog box:

Address Book in Outlook 2016

    3.    From the drop-down list labeled When opening the address book, show this address list first, select the desired address book:

Addressing list in Outlook 2016

    4.    Click OK.