I've been using an add-in in Outlook 2007 (and previous Outlook version) which added its own tab in the Options dialog of Outlook to configure it.
I've now upgraded to Outlook 2010 and the add-in still seems to work just fine but I can't find its configuration tab anywhere. It hasn't been added as an extra section in the new File-> Options dialog nor can I find anything on the Add-Ins tab of the Ribbon.
How can I configure it in Outlook 2010 or should I look for a new add-in?
While the Add-Ins tab on the Ribbon is indeed the first place to look for add-in button that used to be on a toolbar or in menu’s of previous versions of Outlook, their Options tab are “hidden” somewhere else.
Instead of now showing as an extra tab in the Options dialog itself, the options tabs for add-ins are now in the Add-In section. By pressing the button “Add-in Options…”, Outlook will show all the tabs that are added by add-ins in a separate Add-in Options dialog window.
Check for updates
Even though the old add-in might still work in Outlook 2010, it is worth it to check for updates for the add-in with the add-in vendor. Many add-in vendors offer updates for once bought add-ins free of charge while others provide upgrade licenses for a reduced price.
Are you looking for a specific add-in?
Do a search in the Add-Ins section of HowTo-Outlook.com.