By default, all Contacts folders are set to be Outlook Address Books when Outlook starts or when a Contacts folder is created. This setting disables automatic configuration of Contacts folders as Outlook Address Books. However, users can still configure new or existing Contacts folders as Outlook Address Books.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | Software\Policies\Microsoft\Office\12.0\Outlook |
| Value Name | DisableOutlookAB |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |