Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

Depending on how you got your copy of Windows 10, you'll need either a digital license or a 25-character product key to activate it. Without one of these, you won't be able to activate your device.

Need help setting up an Xbox profile or signing in to Xbox on your console, PC, or mobile device? This solution will help you sign in or create a new account.

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

最低下载速度为 3.5 Mbps（或 3,500 Kbps） 上传速度不影响流式传输 Ping 值低于 150 毫秒 如果连接速度 达到或超过 正在尝试执行操作的最低建议标准，请使用以下任意一项获得其他帮助： 对于 有线 连接，请参阅： 解决有线网络连接问题 对于 无线 连接，请参阅： 排查无线网络连接问题

当关键的 Windows 系统文件丢失或损坏时，作系统可能会开始出现故障。 常见症状包括 Windows 功能无法正常工作、系统错误或 Windows 无响应或冻结。 如果遇到这些问题，可以使用内置的 Windows 修复工具（部署映像服务和管理 (DISM) 和系统文件检查器 (SFC) ）扫描损坏的系统文件并还原丢失或损坏的 ...

If you wish to make additional purchases within Fortnite like V-bucks, you'll need to add a payment option to your account. For more info on payment options, go to: Update your billing address and payment options

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Learn how to test and optimize your network connection speed for the best experience on Xbox.