Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

If you get an error code while downloading and installing Windows updates, the Update Troubleshooter can help resolve the problem. Select Start > Settings > System > Troubleshoot > Other troubleshooters. Next, under Most frequent, select Windows Update > Run.

兑换礼品卡和充值码以进行 Xbox 购买和延长 Xbox 订阅。. 代码的长度为 25 个字符，包括数字和字母，并且采用横竖 5 个字符的 5x5 格式。. 代码可以是你从 Microsoft 或受信任的零售商处购买的数字卡或物理卡。. 请注意，如果帐户的未结余额或付款选项不再有效 ...

关于设备暂停. 设备暂停可能包括临时撤销主机上的权限（如通信或多人游戏），而设备禁用会永久阻止 Xbox 主机或设备访问 Xbox 网络。. 设备强制操作适用于设备，而不是特定的 Xbox 档案。. 这意味着没有人可以使用受影响的主机或设备连接到 Xbox 服务，但你的 ...

下面介绍 Xbox Game Pass 订阅者如何将其 Game Pass 订阅权益扩展给朋友和家人。. 在家：将你的主要 Xbox（如果有多个）设为常用 Xbox，这会让使用其档案登录该主机的任何人都能够使用你的 Game Pass 订阅。. 常用 Xbox 和游戏共享的工作原理.

Report a scam. If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.

Ways to install Windows 11. Windows help & learning. Learn how to change settings to enable Secure Boot if you are not able to upgrade to Windows 11 because your PC is not currently Secure Boot capable.

如果你仍无法进行购买，请使用该页面右侧的“联系我们”按钮获取帮助。. “此方式无效。. 请与你的银行联系，以获取详细信息”. 如果你在尝试为购买付款时看到付款方式错误，请尝试使用其他付款方式。. 下面说明了如何更新支付选项：. 登录到要更新的 ...

What is SharePoint? SharePoint is a collaborative platform designed to facilitate teamwork and streamline document management within organizations. It enables you to create websites, manage content, share information, and collaborate seamlessly across teams, enhancing productivity and communication. Find out more.