Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

解决安装 Windows SP1 时遇到的问题. 如果你尝试安装 SP1 并看到指示安装未成功的错误消息，这可能是因为用于安装更新的 Windows 维护服务商店出现问题，或者是因为你的防病毒软件阻止安装更新。

若要将其关闭，请将设置切换为“关闭”。 关闭 Microsoft Defender 防火墙可能会使设备（以及网络，如果有）更容易受到未经授权的访问。

Enable this setting to give participants more discretion over how they want to be presented in a meeting. Allow attendance report. Attendance reports contain meeting attendance details, including how long attendees stayed, and how long your meeting lasted, and more.. Turn on the Allow attendance reporttoggle to generate, view, and download attendance reports.

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If you don’t have a Teams account, select Join as a guest and enter your name to join the meeting. Depending on how the meeting was set up, you may need to sign in to an account that was authorized for the meeting; for details, see Join a meeting without a Teams account.. If you have a Teams account, select Sign in and join to join with access to the meeting chat and more.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

了解如何在 Microsoft Edge 中启用 Adobe Flash。

My Account portal for work or school accounts; Change your work or school account password; Find the administrator for your work or school account

By setting up MFA, you add an extra layer of security to your Microsoft 365 account sign-in. For example, you first enter your password and, when prompted, you also type a dynamically generated verification code provided by an authenticator app or sent to your phone.