IDTExtensibility2 Add-In only Loads in Outlook

Question

I created a com add-in which is set to load on startup of Word, Excel and Outlook. When I attempt to debug the add-in the OnConnection event is only fired in Outlook, never for word or excel. With a compiled version I can see, via procmon, the Load Behaviour being changed from 3 to 2 in word and excel, but no real clue as to a reason why. Nothing actually happens in the add-in at the moment other than the default code as inserted by the create project wizard, so I can exclude an unhandled exception in my code.

Can anyone help?

I have also removed the shim to eliminate that as a cause

Answer 1

In the unlikely event anyone else is still writing these, this was the cause as I was targeting a Office 2000 products, it appears that this doesn't affect Outlook!

http://support.microsoft.com/kb/948461

Specifically the "Clients that are running Office 2000 or Office XP" section.