Microsoft Office Excel support Automation Add-ins in addition to Component Object Model (COM) Add-ins. This article explains the differences between these two types of Add-ins.

Alternatively, you can also view your add-ins directly from the Home tab by selecting Add-ins. You can directly install add-ins from this page or select More Add-ins to explore.

In the COM Add-Ins dialog box, the add-ins that are available (loaded) in Microsoft Word are listed. To temporarily make a COM add-in unavailable, clear the COM Add-In check box, and then click OK.

Add-ins provide optional commands and features for Microsoft Excel. By default, add-ins are not immediately available in Excel, so you must first install and (in some cases) activate these add-ins so …

Outlook add-ins provide solutions to help you better interact with Outlook and complete tasks on your messages and appointments without leaving Outlook. While some add-ins are installed by your email …

Use add-ins in Outlook.com to help you automate tasks when you view or create messages.

Office add-ins can help you personalize your documents or speed up the way you access information on the web. For example, with an add-in you could look up items on Wikipedia or add an online map to …

When you try to add a Component Object Model (COM) add-in to your Templates and Add-Ins list, you may find that the COM add-in is not loaded when you restart Microsoft Word 2002, Microsoft Office …

If an Office add-in for Outlook isn’t showing up, it may have been disabled. Here’s how to enable it. Important: New name for apps for Office - Office Add-ins.

Learn how to fix Outlook add-in warnings, dismiss add-in notifications, or disable an unhealthy add-in.