如果 Office 最初是预安装的，并且需要在同一设备或新设备上重新安装，则应已具有与 Office 副本关联的Microsoft帐户。 这是用于按照以下步骤安装 Office 的帐户。 如果需要首先卸载 Office ，请参阅 从电脑卸载 Office 或 卸载Office for Mac。

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

How to get Microsoft 365 Microsoft 365 is a subscription service that ensures you always have the most up-to-date Microsoft 365 apps from Microsoft. And with Microsoft 365 Family, you can share your subscription with up to five other people, install Microsoft 365 on all your devices, and sign in to five at the same time. That means you can use Office regardless of where you are or what device ...

安装媒体（如 U 盘）可用于安装 Windows 的新副本、执行 Windows 的全新安装或重新安装 Windows。 若要创建安装媒体，请转到 软件下载网站，可在其中找到分步说明。 在该网站上，你可以选择 Windows 版本，并在 USB 闪存上创建安装媒体。 或者，可以创建一个 ISO 文件，用于虚拟机 (VM) ，或用于将安装 ...

Learn how to sign in to your Outlook or Hotmail mailbox using your Microsoft account.

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。 如果已兑换产品密钥、重新安装应用，或者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。 展开下面的“ 了解详细 ...

若要查看应用、游戏或订阅购买、跟踪订单或查看和打印发票，请登录到Microsoft 帐户仪表板上的订单历史记录页。

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To learn how to upgrade your Surface to Windows 11, see Getting ready for the Windows 11 upgrade. Get to know Surface Laptop 3 Surface Laptop 3 has power and style to help you get things done throughout your day the way you want. To help you get around, here are some diagrams for Surface Laptop 3. Studio Mics Windows Hello facial-recognition camera Surface Connect port 4. USB port 5. USB-C ...