If the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins\ - LoadBehavior registry entry is set to 2: In the COM Add-ins dialog box, the Microsoft Conferencing Add-in for Outlook entry will be selected.If the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins\ - LoadBehavior registry entry is set to 3: The Conferencing Add-in for Outlook uses the LoadBehavior values of 2 for disabledand 3 for enabled. This value determines how the add-in is loaded by the host program. In addition, the add-in should specify its desired load behavior by using a DWORD value called LoadBehavior.
The add-in can provide values at these key locations for both a friendly display name and a full description.
How to enable the Conferencing Add-in for Outlook If this happens, you can manually enable the Conferencing Add-in for Outlook, and then view the registry to make sure that the Conferencing Add-in for Outlook is enabled in Outlook.
After you install the Conferencing Add-in for Outlook in Microsoft Office Outlook 2007 or Outlook 2003, the Conferencing menu and the Microsoft Office Live Meeting toolbar may not appear in Outlook.