Here are the most likely causes for an unrecognized charge: A Microsoft subscription has recurring billing enabled. Someone you know, such as a family member, bought something with your card. You can now investigate this on the Manage your payments page. A previously declined charge was charged again. A pre-order or split order was shipped. Someone made an in-app purchase from an app, game, or ...

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

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.

Learn more about the advanced security features for Outlook.com that come with an Office 365 Home or Office 365 Personal subscription.

Wondering what multifactor authentication, sometimes known as two step verification, is? This article will explain it clearly.

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

SharePoint is a browser-based app that you connect to through your web browser. With SharePoint, you can do many things, such as: uploading and sharing files to your document library, collaborating on files with others, creating a team site or communication site, and more. If your organization has assigned you a license that includes SharePoint, you can sign in. In this article, we discuss the ...

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

KB5005413: Mitigating NTLM Relay Attacks on Active Directory Certificate Services (AD CS)

如果 Office 激活失败，Office 应用的标题栏中将显示“ 未经授权产品 ”或“ 非商业用途/ 未经授权产品 ”，且大多数 Office 功能将被禁用。 要恢复所有 Office 功能，将需要解决造成激活失败的问题。