How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!

了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版，包括如何使用有效产品密钥或 Microsoft Store。

Get more information about managing your Xbox subscriptions, issues with billing, and more.

Get answers to all of your Microsoft Word questions. Find Word help, how-to articles, training videos, tutorials, and more.

大部分应用程序（例如 Microsoft Word、Excel 和 PowerPoint）在安装软件时会自动安装字体。 例如，Microsoft Publisher 等专为文档设计项目而创建的应用程序通常带有许多额外的字体，可在计算机上的其他任何程序上使用。

Repair or reset Windows Media Player: If Windows Media Player is not working properly, you can try to repair or reset it to its default settings.To do this, Select Start > Settings > Apps > Installed Apps.. Scroll down and click the three horizontal dots next to Windows Media Player and choose Advanced options, and click the Repair or Reset button. Note that resetting Windows Media Player will ...

The taskbar can display the temperature in Celsius (°C) or Fahrenheit (°F). To switch between these two units, select the weather icon on the taskbar, select the Edit location and unit icon on the weather card, select Celsius or Fahrenheit on the weather, and select Save. News and interests is supported in any taskbar orientation.

准备好安装了吗？ 在开始之前，请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥，只需重新安装应用，或者知道你已通过工作或学校分配了许可证，则可以跳到登录部分 ，下载并安装 Microsoft 365 或 Office。 但是，如果是 首次 安装 Microsoft 365 或 Office，可能需要先执行一些步骤。

登录到 Xbox 应用，然后选择“好友”选项卡。 在搜索框中输入玩家代号，然后按 Enter。请务必细心注意玩家代号的拼写和空格。 右键单击要添加的搜索结果中的配置文件，然后选择“打开配置文件”。选择配置文件屏幕中的“添加好友”按钮。在对方将你加入他们的好友列表之前，你将显示为关注 ...

Near the upper right corner of the message list, select Filter > Unread. Tip: The name of the filter button changes to Unread to indicate which filter is applied. When you want to remove the filter so that you can see all the messages in the current folder, simply click the Unread filter button.