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.

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, phone, or email options.

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 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 use an automated tool to uninstall Office from your computer. Follow the steps for different web browsers and Office 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 set up and troubleshoot cloud gaming on various devices, such as Android, Apple, Windows, Xbox console, Samsung smart TV, and Meta Quest. Cloud gaming requires Game Pass Ultimate or a supported free to play game and is only available in select regions.

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 download and install Microsoft 365 or Office 2021 on your device, whether you have a Microsoft account, a work or school account, or a product key. Find out how to activate the apps, change the version, and get help with common issues.

Learn how to create a blank document or use a template in Word. Find out how to add text, images, art, and more to your document and save it to OneDrive.