When you sign in with Windows Hello, your biometric data is stored securely (see here for more technical information). Malicious users and attackers constantly try to come up with new ways to access your device and access sensitive information. To stop them, you need a secure sign-in process that begins at the biometric sensor, and ends where your profile is stored. What does Enhanced Sign-in ...

無法登入？ 如果您無法登入您的 Microsoft 帳戶，大部分的問題都可以透過我們的登入助手工具來識別。 登入助手 連絡客戶支援 如需技術支援，請前往 連絡 Microsoft 支援服務，輸入您的問題，然後選取 [取得協助]。 如果仍需要協助，請選取 [連絡支援服務] 以前往最佳支援選項。

Windows Hello 是登入 Windows 裝置時更加個人化且安全的方式。 您可以使用臉部辨識、指紋或 PIN 登入，而不是使用密碼 Windows Hello。 這些選項可協助您更輕鬆且更安全地登入計算機，因為 PIN 只與一部裝置相關聯，且已使用您的Microsoft帳戶備份以進行復原。 您可以使用 [設定] 應用程式來設定和管理 ...

IMPORTANT You should apply the Windows security update released on July 8, 2025, or a later update as part of your regular monthly update process. This article applies to those organizations who should begin evaluating mitigations for a publicly disclosed Secure Boot bypass leveraged by the BlackLotus UEFI bootkit. Additionally, you might want to take a proactive security stance or to start to ...

Summary CVE-2022-34691, CVE-2022-26931 and CVE-2022-26923 address an elevation of privilege vulnerability that can occur when the Kerberos Key Distribution Center (KDC) is servicing a certificate-based authentication request. Before the May 10, 2022, security update, certificate-based authentication would not account for a dollar sign ($) at the end of a machine name. This allowed related ...

Learn how to add all your different accounts to the Microsoft Authenticator app.

如果你尝试使用 Microsoft 帐户登录 Office，可能会收到消息要求提供家长权限或让你验证年龄。 有关为何看到此消息以及如何解决该问题的详细信息，请参阅 家长许可和 Microsoft 子女帐户。 在 iOS 邮件应用中设置Microsoft 365 、Exchange 或 Outlook 电子邮件

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors.

If you can't sign in to your email account on the Outlook mobile app, get help for the account you're trying to sign in with

When you use Microsoft products and services while signed in with your Microsoft account, you can choose to save your data to the cloud to help improve your experience. The privacy dashboard provides tools to view and clear this data and to manage your privacy settings for the products you use. Data that appears on the dashboard can include data related to your Bing and Cortana searches ...