On a remote laptop ACT! Address Book is Missing From the Outlook Address Book Selection List. Act 2007(v9) office 2003. The act extensions add-in does appear in the list of available add-ins in add-in manager in outlook. I have tried disabling the act extensions and reenabling them but still the act address book is still missing. Does anyone know away of removing the extensions and readding them to outlook without uninstalling and reinstalling act completely ??? or does anyone have any more ideas ? I believe at one point office may have been reinstalled.