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". We made this change to better distinguish the extension platform from Office apps (applications).

Add-ins have access only to the data in the email message that you're working in. All add-ins are validated by Microsoft, including those that you install from the Office Store. For more information, see the privacy statement and the terms and conditions section in the add-in’s consent form.

Windows Media Player plug-ins. Desktop themes and wallpapers Visualizations are colors, shapes, and patterns that move to the music in Windows Media Player Now Playing mode. Plug-ins or add-ons add functionality—such as audio effects or DVD capability—to Windows Media Player.

For more information, see the following Microsoft Web site: Office Add-ins platform overview. Automation Add-ins. In addition to COM Add-ins, Excel supports Automation Add-ins. Automation Add-ins build on COM Add-ins in that functions in Automation Add-ins can be called from formulas in Excel worksheets.

Require Application Add-ins to be signed by Trusted Publisher Check this box to have the Trust Center check that the add-in uses a publisher's trusted signature. If the publisher's signature hasn’t been trusted, the Microsoft 365 program doesn’t load the add-in, and the Trust Bar displays a notification that the add-in has been disabled. ...

注: [URL から追加] オプションは、カスタム Outlook アドインをインストールするために使用できなくなりました。回避策として、任意のブラウザーで URL を開いてアドイン ファイルをダウンロードし、[ファイルから追加] オプションを使用してインストールします。

To create the installation media, here's what you'll need: A PC with a reliable internet connection. The download time will vary, depending on your internet connection.

If you’re having sound or audio problems, the following suggestions might help. The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn’t.

Note: The steps to install the 2019, 2016, or 2013 versions of Office Professional Plus, Office Standard, or a stand-alone app such as Word or Project might be different if you got Microsoft 365 through one of the following: Microsoft Workplace Discount Program (formerly known as Home Use Program): If you bought Microsoft 365 for personal use through your company, see Install Office through ...

Note: If a compatibility issue has been identified on your device that would disrupt your experience using Windows 11, we will temporarily delay your upgrade until the issue is resolved.Compatibility safeguard holds help ensure you have the best experience possible when upgrading and your productivity is not disrupted if critical apps or drivers are not yet compatible.