The following is a list of steps to troubleshoot the issue of Outlook not properly syncing an address book with an email account:

1. Check your internet connection and ensure that ther is no interruption
2. Reopen Outlook to reset any connection issues
3. Run the Outlook troubleshooter to attempt to identify and resolve potential issues with Outlook
4. Reset your Email account credentials and reconfigure the account settings in Outlook
5. Configure advanced settings to sync Outlook with your Email account for address book
6. Open the sync logs to identify and isolate the problem
7. Reinstall the Outlook application to ensure that the issue is not due to a corrupted installation