Learn how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Find out how to activate Office, troubleshoot issues, and switch languages or bit versions.

Learn how to access SharePoint, a browser-based app for online collaboration and document management, through your web browser. Find out how to check your subscription, troubleshoot issues, and get training for SharePoint.

Learn how to download and install Microsoft 365 apps like Word, Excel, Teams, and PowerPoint 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 uninstall or remove apps and programs in Windows 10 or 11 using different methods. Find tips and troubleshooters for common issues and errors.

Learn how to view, install, and change settings for add-ins that enhance Microsoft 365 programs with custom commands and features. Find out how to deal with add-in security, compatibility, and device access issues.

Learn how to redeem a Microsoft gift card, Xbox download code or token, Office product key, or Windows activation code to your Microsoft account. Find troubleshooting tips and contact support if you need help.

Learn how to switch to the new Outlook for Windows, a preview app with the latest features and design. Find out how to import settings, customize the experience, and get feedback or support.

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 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.

Find solutions to common problems, or get help from a support agent for Microsoft 365, Office, Windows, Xbox, Surface, and more. Sign in to get personalized help and access live chat with a Microsoft specialist.