See how to view the details for signatures and certificates.

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了解如何关闭双重验证。 双重验证是一项可选的安全功能，通过使用两种形式的身份，即密码和联系方式（也称为安全信息），这样别人更难进入您的 Microsoft 帐户。

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

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You can often view a protected file by simply opening it. For example, you might double-click an attachment in an email message, a document in File Explorer, or a link to a file and be able to open the protected file. If you are trying to open a protected file that has a .pfile name extension, like a .ppng, you will need to use the Microsoft Purview Information Protection viewer or the Azure ...

Learn how to identify and open encrypted and protected emails no matter what email client you're using.

Learn how to manage the online safety and privacy settings on the Xbox console for you and every member of your family group.

注意: Microsoft Authenticator 不适用于电脑或 Mac，因为出于安全原因，验证器应用通常用于智能手机。 了解详细信息。 Microsoft不再支持超过一年的 Authenticator 版本。 始终使设备保持最新状态。 从 2025 年 7 月开始，Authenticator 中的自动填充功能将停止工作，并且从 2025 年 8 月起，密码将不再可在 ...

启用双重验证 或设置 Authenticator 应用 后，如果使用较旧的设备 (（如 Xbox 360）或不支持双重验证的邮件发送安全摄像头) ，可能会遇到问题。 对于这些设备，可以改为使用应用密码登录。 应用密码是随机生成的长密码，在登录不支持双重验证的应用和设备时，你只需提供一次此密码而非常规密码 ...