1. On the Tools menu, click Trust Center, and then click Add-ins. 2. View the add-ins and application extensions that are categorized as follows: - Active Application Add-ins Lists the extensions that are registered and currently running in your Office program. - Inactive Application Add-ins Lists the add-ins that are present on your computer but are not currently loaded.
For example, smart tags or XML Schemas are active only when the document that references them is open. Another example is the COM add-ins that are listed in the COM Add-ins dialog box. If the check box for a COM add-in is selected, the add-in is active. If the check box for a COM add-in is cleared, the add-in is inactive.
To learn how to open the COM Add-in dialog box, see the section called Turn off or manage the installed add-ins.