Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

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

More and more people and organizations are using digital documents instead of paper documents to conduct day-to-day transactions. By reducing dependency on paper documents, we are protecting the environment and saving the planet’s resources. Digital signatures support this change by providing assurances about the validity and authenticity of a digital document. For more information, see Add ...

查找管理 Microsoft 帐户、Xbox 档案等所需的一切。

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Note If you don't see the security key option, it's possible that your organization doesn't allow you to use this option for verification. In this case, you'll need to choose another method or contact your organization's help desk for more assistance. Before you can register a security key, you must have at least one additional security verification method registered.

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.

新的数字工作流提供更安全、更可靠且用户友好的激活体验，并有助于防止欺诈。 虽然该过程已更新，但脱机激活功能仍受支持。 依赖传统脱机激活的客户可以继续使用它，而无需更改其环境。 产品激活门户支持对各种永久Microsoft产品进行激活，并支持连接和非连接的设备。 这种演变可确保激活 ...

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

了解如何查找用于激活的 Windows 产品密钥，以及何时改用数字许可证。