At Microsoft, we're guided by our AI principles, our Responsible AI Standard, and decades of research on AI, grounding, and privacy-preserving machine learning.Data privacy and security is a key principle of responsible AI. We aim to help our customers use our AI products responsibly, sharing our learnings, and building trust-based partnerships.

Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

Windows 11 automatically downloads and installs updates to make sure your device is secure and up to date. This means you receive the latest fixes and security updates, helping your device run efficiently and stay protected.

When you’re away from your console or your Windows 10/11 device, you can still get ready to play your next Xbox console game. Use the Xbox mobile app, the Xbox Game Pass app, or the Microsoft Store on PC to remotely install games—so your games are ready when you are.

Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox).

在另一台 Windows 电脑或其他设备上，像往常一样连接到 WLAN，如出现提示，则输入你的 WLAN 密码 有关连接到 Wi-Fi 的详细信息，请参阅在 Windows 中连接到 Wi-Fi 网络。

If you accidentally delete a file or folder in OneDrive, you may be able to recover it later from the OneDrive recycle bin.. For info about restoring a SharePoint file or folder, see how to restore items from the SharePoint recycle bin.For info about restoring SharePoint files stored in OneDrive, see Restore a previous version of a file in OneDrive.

Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.For this reason, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.

S’il s’agit de la première fois que vous installez Microsoft 365 vous devrez peut-être commencer par effectuer certaines étapes de configuration. Développez la section En savoir plus ci-dessous. Toutefois, si vous réinstallez Microsoft 365, et que vous avez déjà utilisé une clé de produit et que vous avez un compte associé à Microsoft 365, accédez à la section , puis connectez ...

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