Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

If you're looking for Help on specific Excel Add-ins, such as Solver or Inquire, see Help for Excel for Windows add-ins. If you're looking for additional help with Excel add-ins using the COM Add-ins dialog box, see Add or remove add-ins in Excel. Get a Microsoft 365 Add-in for Excel.

Use an add-in while composing a message. Create a new message or reply to an existing one. From the ribbon, select the Message tab, then choose the add-in you want to use. If the add-in doesn’t appear in the ribbon, select Apps to view your installed add-ins.

Explore Microsoft Office help and training resources. Find how-to articles, video tutorials, and additional support for Office apps.

Click the drop-down menu on any email message in Outlook.com, and then select Get Add-ins or select More apps in the app bar and select Add apps. On the Add-ins for Outlook page, select the add-in. For free add-ins, click Add .

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.

When you select the Import Settings option during setup, the web add-in counterparts of your existing COM add-ins in classic Outlook for Windows are installed in the new client. The following table lists the applicable COM add-ins and their web add-in counterparts.

Get an Office Store add-in. On the Insert tab, look for the Add-ins group. To get new add-ins, select Get Add-ins. To use add-ins you already have, select My Add-ins. The add-ins you'll see will depend on the kind of Microsoft 365 subscription you have.

Add-ins for Outlook for Mac are programs or utilities that help you automate tasks or add new features 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.

A Subscribed badge means a Microsoft 365 subscription such as Microsoft 365 Family or Personal is already associated with your account and you can access many of your subscription benefits including installing the desktop apps.