Find out how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Follow the steps to sign in, choose your language and bit version, and activate your product.

Learn how to download and install Microsoft 365 apps, like Excel, on your PC or Mac. Follow the instructions in the browser and sign in with your Microsoft 365 account to activate the apps.

Learn how to create a blank document or use a template, add text, images, and other elements, and save your document to OneDrive. Find more tips and guides for Word features and functions.

如果这是你第一次安装 Microsoft 365，则可能需要先执行一些设置步骤。展开下面的 “了解详细信息”部分。 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“登录并安装 Office”的部分。

Learn how to view, manage, and install add-ins for Microsoft 365 programs on Windows. Find out how to troubleshoot add-in errors, security settings, and device permissions.

Learn how to download and install Microsoft 365 or Office 2021 on a PC or Mac with a Microsoft account, work or school account, or product key. Find tips, troubleshooting, and activation steps for Office apps.

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，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。

Learn how to use the PC Health Check app or manual steps to see if your device meets the system requirements for Windows 11 after changing your hardware. Find out how the upgrade offer is based on various factors and how to refresh the assessment.

Learn how to get Visio, a stand-alone application for creating diagrams, on your PC or online. Find out which version of Visio you have, how to associate it with your account, and how to download and install it.

Learn how to create, share, and manage sites, lists, and libraries in SharePoint. Find out how to upload, edit, collaborate, and sync files with SharePoint in Microsoft 365 or SharePoint Server.