Step 1: Check the settings of Outlook Address Book .
Go to contacts > right click on Contacts folder ( Top left side) > Properties > click on Outlook Address Book tab > check the box “show this folder as an email Address Book”
Close and reopen Outlook and check , if this does not work
Step 2: Remove and Re-Add Outlook Address Book
- On the Tools menu, click E-mail Accounts.
- Under Directory, select View or change existing directories or address books, and then click Next.
- Click the address book you want to delete.
- Click Remove.
- Click Finish.
Re- Add Outlook Address Book
On the Tools menu, click E-mail Accounts.
Under Directory, Click Add a new directory or address book, and then click Next.
Click on Additional address book , select Outlook Address Book
Close and re-open Outlook and check with the issue