See how to view the details for signatures and certificates.

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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 ...

Check Xbox services, games, and apps for service outages or functionality issues.

可通过三种方式将 Microsoft Authenticator 与你的帐户配合使用： 添加 Authenticator 作为验证登录的一种方式。 这样，即使忘记了密码，也可以登录。 添加 Authenticator 作为每次登录的一种方式。 使用一次性密码代码可提高帐户安全性。 这称为 双重验证。 添加 Authenticator 作为 登录的唯一方式 - 只需点击 ...

You see the following error code when you try to launch a game on a Windows 10/11 device: 0xc0ea0001

Q&A lets you manage questions from attendees in larger meetings, like town halls, webinars, all hands, and trainings. As an organizer, you can choose to have moderated or unmoderated Q&A sessions.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and ...