Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it.

If you can't sign into your Microsoft account, use our guided tool below to help you find the correct solution. Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.

Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Check for Windows updates. Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

If you need to reinstall Office, select the version you want to install and follow those steps: Microsoft 365, Office 2019, Office 2016, Office 2013, Office 2010, or Office 2007. How to uninstall Office automatically.

兌換禮品卡與代碼，以購買 Xbox 並擴充您的 Xbox 訂閱。. 代碼的長度為 25 個字元 (包含數字和英文字母)，並採用 5x5 格式，即以五個字元為一組，共五組。. 代碼可以是您向 Microsoft 或信任的零售商購買的數位或實體卡片。. 如果您的帳戶有未付餘額，或是付款 ...

Before you begin. Make sure the device you want to install Windows 11 on meets the minimum system requirements. If your device is currently running Windows 10, we recommend you verify the minimum system requirements using the PC Health Check app.

有关 MLB The Show 24 的问题？. 查看此处以了解我们当前正在跟踪的已知游戏问题，并了解可以对其执行的操作。. 查找适用于 Windows 设备的大多数 Microsoft 和第三方游戏的基本问题的解答。. 注意 可以在 Microsoft Store 的游戏产品详细信息页，或游戏开发人员网站查找 ...

If you need help with downloading, installing, or activating Windows or Office; need Technical support or have any account or billing related questions, contact us online . If you still need help with your purchase, select your region to find the phone number for your country.