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.

Resolve Windows blue screen errors with tips and resources to do your own troubleshooting, or contact the Microsoft support if you need more help.

DirectX 9.0c 通过安装 DirectX 9.0c 最终用户运行时适用于 Windows XP 和 Windows Server 2003。. 某些应用程序和游戏需要 DirectX 9。 但是，你的计算机包含更新版本的 DirectX。 如果安装并运行需要 DirectX 9 的应用程序或游戏，你可能会收到错误消息“无法启动此程序，因为计算机中丢失 d3dx9_35.dll。

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。

Find everything you need to manage your Xbox account, profile, and more.

Notes: You can either use an email address you own as a Microsoft account, or create a new address by choosing "Get a new email address" or "Use your email instead" when you sign up.

Country/region. Microsoft Store sales support. Technical or download support. Egypt +20 2 353 3333. Technical support. South Africa. 0800 167 344. Technical support

Microsoft Authenticator is a free app that helps you sign in to all your accounts without using a password - just use a fingerprint, face recognition, or a PIN.

Note for iPhone: If you are having trouble with your iPhone import, make sure your device is unlocked and you’ve accepted the permissions. Note for Android and other devices: If you’re using an Android phone or other device and import isn’t working, you might need to change your phone’s USB settings from Charging over USB to Transfer Files or Transfer Photos.

如果要在现有的 Outlook.com 帐户中使用新的电子邮件地址，请按照本文中的说明创建电子邮件别名。 这将为您提供一个额外的电子邮件地址，该地址使用相同的收件箱、联系人列表和帐户设置作为您的主电子邮件地址。