The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

To learn about digital signatures (also known as digital ID), what they can be used for, and how to use them in Word, Excel, and PowerPoint, see All about digital signatures. Create a signature line in Word or Excel (desktop) In the document or worksheet, place your pointer where you want to create a signature line. On the Insert tab, select Add a Signature Line in the Text group. In the ...

Microsoft prioritizes account security and works to prevent people from signing in without your permission. When we notice a sign-in attempt from a new location or device, we help protect the account by sending you an email message and an SMS alert. If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with ...

Explore tips to change your Microsoft Teams background. Learn how to replace, blur, or change your Teams background image before or during a meeting.

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因为 Lync Web App 和 Office 365 是基于云的技术，因此它们需要交互式浏览器功能。 此功能的一部分由 JavaScript 提供。 您可能需要在您的浏览器中启用 JavaScript，以确保浏览器功能可以正常运作。 不同的浏览器，启用 JavaScript 的说明会有所不同。 从列表中选择浏览器以了解如何操作。 我需要在以下浏览 ...

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Using Authenticator as a way to sign in If you have turned on passwordless, two-step, or multi-factor authentication for your account, use the following steps to sign-in: Go to the site where you want to sign in. Enter your username at the sign-in prompt and select Next. Select Send notification.

Microsoft已颁发更新的证书，以确保 Windows 设备上的安全启动保护的连续性。 Microsoft将在大部分 Windows 设备上管理这些新证书的更新过程。 此外，我们还将为管理自己的设备更新的组织提供详细的指导。 行动号召 可能需要采取措施来确保 Windows 设备在 2026 年证书过期时保持安全。 UEFI 安全启动 DB 和 ...

将必应保留为默认搜索引擎可在新的 Microsoft 中提供增强的搜索体验，包括指向 Windows 应用的直接链接、使用工作或学校帐户登录组织的相关建议，以及有关 Windows 的问题的即时解答。 但是，你可以将默认搜索引擎更改为使用 OpenSearch 技术的任何站点。 若要在 Microsoft Edge 中更改默认搜索引擎： 使用 ...