See how to view the details for signatures and certificates.

Learn how to redeem a Microsoft/Xbox gift card or other code on your mobile device, Windows device, or Xbox console.

A digital signature attached to an email message offers another layer of security by providing assurance to the recipient that you—not an imposter—signed the contents of the email message. Your digital signature, which includes your certificate and public key, originates from your digital ID. And that digital ID serves as your unique digital mark and signals the recipient that the content ...

Find out what to do when you receive a “Call us overprotective” message when signing in to Xbox.com.

This article describes how you can digitally sign a macro project on Windows by using a certificate. If you don't already have a digital certificate, you'll need to get one.

查找 Xbox 和适用于移动设备和 iPad 的游戏应用程序的 Microsoft 官方软件许可条款。

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

What are sensitivity labels? Sensitivity labels are applied either manually or automatically to files to keep them compliant with your organization’s information protection policies. Sensitivity labels indicate the classification of and can apply protection to files. Your organization customizes the label names and descriptions. Contact your organization’s IT department for additional ...

了解如何添加安全信息以便保护你的 Microsoft 帐户。

If you don't recognize a purchase If you don't recognize a charge on your account, you can now investigate it on the Manage your payments page of your Microsoft account dashboard - it may have been someone in your family making an in-app purchase. Learn more. See also How to investigate a billing charge from Microsoft In-app purchases with non-Microsoft billing platforms Need more help ...