注意: 此内容可帮助你使用工作或学校帐户。 如果在个人Microsoft帐户上遇到验证码问题，请参阅 验证码问题疑难解答。

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Learn what you can do if you're not receiving account aign-in verification codes.

无论你何时访问 Microsoft 帐户、更改其中的个人信息或向其添加新的联系信息，我们都会生成安全代码，并将其发送到你帐户安全信息中的电子邮件地址或手机号码。然后，系统会提示你输入此代码以确认更改。通常，很短时间就会收到该代码。

Provides information for avoiding and reporting Microsoft technical support scams.

Banks in the countries and regions of the European Economic Area are required to verify the identity of the person making an online purchase before the payment can be processed. This verification requires multi-factor authentication to help ensure your online purchases are secure and protected. Expand all

Sign-in options Usage Guidelines URL: Privacy Policy URL: ...

如果在完成 Xbox 购买时遇到问题，我们可以帮助解决此问题。

Summary This article lists the security issues and quality improvements included in this security update. The bold text within the brackets indicates the item or area of the change we are documenting. Improvements [Secure Boot Advanced Targeting (SBAT) and Linux Extensible Firmware Interface (EFI)] This update applies improvements to SBAT for the detection of Linux systems. If you installed ...

本文介绍了启用了 Windows 8.1、 Windows RT 8.1、 Windows Server 2012 R2、 Windows 8，Windows RT，Windows Server 2012，Windows 7 和 Windows Server 2008 R2 中的 根证书的 Windows 程序 的紧急更新的更新。应用此更新之前，请参阅更多 有关此更新，请查看本文中的 系统必备组件。 关于此更新 Windows 根证书程序允许受信任的根 ...