Change Your Default Address Book
Change Default Address Book
When you're sending an email, you usually want your most common contacts to come up when you select recipients. To ensure this, you might want to change your default address book.
1. On the Home tab, in the Find group, click Address Book .
2. In the Address Book dialog box that opens, click Tools > Options.
3. Under "When opening the address book, show this address list first:, choose the name of the address book you want to use by default.
4. Click OK, and close the dialog box.
After restarting your Outlook Application, the default should be changed.