Procedures for Outlook 2010:
  • Click Start -> Settings -> Control Panel.
  • Double Click Mail .
  • Click E-mail Accounts button.
  • Choose View or change existing directories or address books from the Directory group. Then click the Next button.
  • Click the Add button
  • Choose Additional Address Books and click Next
  • Choose Outlook Address Book and click Next
  • Then click Finish
  • Now, Open your Outlook
  • From the left panel, highlight Contacts
  • Right click on it and choose Properties
  • Change to the Outlook Address Book tab then check the option Show this folder as an e-mail address book
  • Click OK