Blocked file types in Outlook. If you use a Microsoft Exchange Server account and the Exchange Server administrator has configured your Outlook security settings, your administrator might be able to help you.

Learn how to use Narrator, a screen-reading app built into Windows, with this complete guide and how-to articles.

Create a channel in Microsoft Teams by selecting Create channel from the menu next to the channel name.

Get a detailed look at the buttons, triggers, paddles, and left and right sticks on your Xbox Elite Wireless Controller Series 2.

Learn how to redeem your Microsoft Rewards points for a huge variety of great products and sweepstakes.

Get started with news and interests, choose how weather looks on your taskbar, turn it on and off, personalize your feed and choose interests and followed publishers.

To get someone's attention in a channel conversation or a chat, @mention them. Just type @ before their name and then select them from the menu that appears.

Use Sway to create and share interactive reports, presentations, personal stories, and more.

激活有助于验证你的 Windows 副本是否为正版，且未在超过 Microsoft 软件许可条款所允许数量的设备上使用。 本文将帮助你找出并改正 Windows 中常见的激活错误。

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