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 download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Find out the system requirements, product keys, activation steps, and troubleshooting tips.

Learn how to mirror or project another device's screen to your Windows PC using Miracast. Follow the steps for Windows 11 or Windows 10 to install and use the Wireless Display app or the Connect app.

Learn how to find, add, turn off, and remove extensions in Microsoft Edge, the browser for Windows 11 and Windows 10. Extensions are tools that customize your browser experience and offer you more control.

Phone Link lets you access your Android device's text messages, photos, apps, calls, and notifications on your Windows PC. Learn how to set up Phone Link with a QR code or manually, and what system requirements and permissions you need.

Learn how to adjust the refresh rate of your monitor to improve gaming, browsing, inking and battery life. Find out how to use Dynamic Refresh Rate (DRR) in Windows 11 to automatically optimize the refresh rate based on your activity.

Learn how to link your Discord, Reddit, Steam, Twitch, and other social media accounts to your Xbox console or Windows device. Follow the steps to link your accounts using Game Bar, Xbox app, Steam, or QR code.

Learn how to download and install language packs for Windows 11, Windows 10, Windows 8.1, and Windows 7. Find out which languages are available and how to use them for menus, dialog boxes, and apps.

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 share files or folders over a Local Area Network (or LAN) in Windows 11 and Windows 10. Find out how to turn on network discovery, troubleshoot sharing problems, and use OneDrive to share files over the Internet.