When you enable an add-in, it adds custom commands and new features to Microsoft 365 programs that help increase your productivity. Because add-ins can be used by attackers to do harm to your computer, you can use add-in security settings to help protect yourself.

Notes: Starting in Outlook for Windows Version 2303 (Build 16215.10000), the All Apps button replaces the Get Add-ins buttonon the ribbon to view installed add-ins and access the Office Store.If you’re using an earlier version of Outlook, you'll see the Get Add-ins button instead.. If you don't see All Apps on the ribbon, your administrator may have turned off add-ins for your organization.

Important: Apps for Office have a new name: Office Add-ins.We are currently updating our products, documentation, samples, and other resources to reflect the platform name change from "apps for Office and SharePoint" to "Office and SharePoint Add-ins".

As you start the new Outlook for Windows for the first time, you'll be asked during set up whether you want to import your settings and install your existing Outlook for Windows add-ins, so your new experience feels familiar.

An untrusted location is a place, generally on the internet, where files can be stored by other people. If you, or your organization, hasn't designated that location as trusted, it's considered untrusted because the source and contents of the files can't be confirmed.

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 that you can use them. Some add-ins are built in to Excel, such as Solver and the Analysis ToolPak. Some other add-ins are available from the Download Center, and must first be downloaded and ...

Get more out of your email with Outlook.com. We've streamlined search to make it easier than ever to find what you're looking for. New features like Files and attachment previews let you see your pictures and files without leaving your inbox.

Learn how to locate your Microsoft Office product key, which allows you to activate and use your Office products without requiring a Microsoft account.

Add-ins in Outlook.com are programs or utilities that help you automate tasks when you view or create messages. Microsoft has partnered with leading companies to build add-ins that help you get things done right from your inbox.

Important: New name for apps for Office - Office Add-ins.We are currently updating our products, documentation, samples, and other resources to reflect the platform name change from "apps for Office and SharePoint" to "Office and SharePoint Add-ins".