Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Create Windows 11 installation media. On the Windows 11 software download page , select Create tool now and follow the instructions to install Windows 11. Warning: Microsoft recommends against installing Windows 11 on a device that does not meet the Windows 11 minimum system requirements.

To find a customer service phone number in your country, please click a region and find your country. Note: Support cases for Surface devices may only be initiated online.

兑换数字代码. 所有 Xbox 数字代码长度均为 25 个字符，包括数字和字母，并且采用五组字符（每组包含五个字符）格式 (xxxxx-xxxxx-xxxxx-xxxxx-xxxxx)。. 如果你尝试在 Windows 或 Xbox 设备上兑换代码，请确保已正确输入所有 25 位数字。. 若要了解有关 Xbox 礼品卡和代码的 ...

兑换礼品卡和充值码以进行 Xbox 购买和延长 Xbox 订阅。. 代码的长度为 25 个字符，包括数字和字母，并且采用横竖 5 个字符的 5x5 格式。. 代码可以是你从 Microsoft 或受信任的零售商处购买的数字卡或物理卡。. 请注意，如果帐户的未结余额或付款选项不再有效 ...

若要申请退款，需要登录用于购买的 Microsoft 帐户，并提供所购买内容的名称、订单编号以及需要退款的原因。. 可以联系 aka.ms/contactxboxsupport 以获取退款申请和其他支持。. 有关 Xbox 实物产品（如光盘游戏和控制器）和其他 Microsoft 产品的详细信息，请参阅 ...

Calculation operators and order of operations. Create a simple formula to multiply and divide in an Excel spreadsheet. You can multiply two or more numbers in one cell or multiply and divide numbers using cell references. All formulas in Excel begin with an equal sign (=).

从 2023 年 8 月 15 日开始：我们将发送 Xbox Game Pass Ultimate 代码，以感谢你参与我们的预览计划 （对于主要和辅助成员），具体取决于主帐户持有者的剩余时间，如下表所述。. 你的共享 Friends & Family 订阅必须在 2023 年 8 月 15 日处于活动状态，才符合条件。. 若要 ...

If you're having problems with Windows 11 on your PC or you want a fresh copy of Windows 11 without the clutter of old files or apps, you can reinstall Windows 11 to try and fix your issues and return your PC to a cleaner state.

Ways to install Windows 11. Windows help & learning. Learn how to change settings to enable Secure Boot if you are not able to upgrade to Windows 11 because your PC is not currently Secure Boot capable.