About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

此页描述如何从 Microsoft 帐户删除安全信息。安全信息由你提供给我们的电子邮件地址和/或电话号码构成，我们使用这些信息 ...

Phishing (pronounced: fishing) is an attack that attempts to steal your money, or your identity, by getting you to reveal personal information -- such as credit card numbers, bank information, or passwords -- on websites that pretend to be legitimate. Cybercriminals typically pretend to be reputable companies, friends, or acquaintances in a fake message, which contains a link to a phishing ...

Explore Ask, create, and draft with Copilot, plus your favorite apps and content in one place. Discover what you can do with Microsoft 365 Copilot app Find the information you need to build, run, and grow your small business with Microsoft 365. Visit Small business help and learning

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 ...

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

Get help and support for Xbox products, services, and accounts in Russian.

联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。

在 Android 设备上安装 Authenticator Google Play 商店在中国不可用，因此只能从以下商店下载Microsoft Authenticator： 联想 Oppo – 搜索要从 Oppo 存储区下载Microsoft Authenticator。 三星

访问 Microsoft 官方支持网站，获取全球范围内的产品和服务帮助，解决技术问题并提高生产力。