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 mirror or project another device's screen to your Windows PC using Miracast. Follow the steps for Windows 11 or Windows 10 to install the Wireless Display app and connect to a wireless display.

Learn how to use Windows Backup to sync your files, folders, settings, apps, and Wi-Fi information to your Microsoft account and OneDrive. Find out how to restore your backup on a new or reinstalled PC and how to manage your backup options.

Learn how to play Xbox games on your device or console with cloud gaming. Find out how to set up, troubleshoot, and manage your subscription for cloud gaming.

本文介绍了如何检查 Xbox 状态、传递优化设置、重启网络硬件等方法来提高电脑上游戏或应用的下载速度。如果你想下载 Windows 更新，请访问“Windows 更新”>“高级选项”>“传递优化”页面。

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.

了解 Outlook for Windows 2024 年 8 月的新功能，包括共享本地文件、在桌面应用中打开附件、排序和筛选改进、关注会议等。 还可以查看 2024 年 7 月的脱机功能、搜索文件夹、键盘快捷方式等更新。

Learn how to change your home page in different browsers, including Microsoft Edge, Internet Explorer, Google Chrome, Firefox, and Safari. Follow the steps for each browser to customize your home page settings.

Learn how to sign in to Hotmail or Outlook.com with your Microsoft account password. Find troubleshooting tips, service status, and help options for Outlook.com issues.

Learn how to upgrade to Windows 11 from Windows 10 using Windows Update, Installation Assistant, or installation media. Note that some devices may not meet the minimum system requirements for Windows 11.