Microsoft 提供的支持类型取决于你拨打电话的产品，以及你的产品是家用还是企业用。 它还可能取决于你是否需要有关 OneDrive 或 Outlook.com 等服务问题的帮助，或是需要有关 Windows 的帮助，但你没有现有的 Microsoft 365 订阅。 详细了解 哪些产品适用于家庭或企业。

Note You can only use mobile operator billing accounts with the partners listed below and with eligible accounts. Contact your mobile operator to confirm your eligibility.

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在 Xbox 購買時會跳出錯誤訊息或錯誤代碼，或是對在 Xbox 上使用 VPN 有疑問？ 了解它們代表的意義。

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows 11、Surface 等的操作方法文章、视频和培训。

Here are the most likely causes for an unrecognized charge: A Microsoft subscription has recurring billing enabled. Someone you know, such as a family member, bought something with your card. You can now investigate this on the Manage your payments page. A previously declined charge was charged again. A pre-order or split order was shipped. Someone made an in-app purchase from an app, game, or ...

联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。

Get an error message or error code when making a purchase on Xbox or have a question about using VPN on Xbox? Find out what they mean.

Summary The Access Control List (ACL) on the Distributed Key Manager (DKM) container enters its first hardening phase starting with the July 14, 2026 Windows security update. This hardening effort addresses an elevation of privilege (EOP) that can arise from the vulnerability documented in CVE-2026-56155. In summary, Active Directory Federation Services (AD FS) relies on the DKM container to ...

Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.