I am developing a vsto COM Add-in with form region for Outlook. It works fine. However, I am facing problems disabling the Add-in in Outlook 2010.
From the File Menu > Options > Add-ins > COM Addins (dropdown) , I am unchecking my Add-in. But when I restart Outlook, the add-in is enabled again. If I check in the COM Addins list, its again enabled. Even the registry entries indicate that the Add-in is enabled again. Does anyone know what might have caused this? Can enabling and disabling be handled in my code, or will it be taken care by Outlook itself.?
As it turns out, its is a bug in Office 2010 Professional. To disable the add-in, you need to run Outlook as an admin, and then disable the add-in.