When your old email address or phone number doesn't suit you anymore—but you want to retain your contacts, online storage, subscriptions, and settings—you can add a new email address or phone number as an alias to your existing Microsoft account.

Create and send personalized email messages to everyone on your address list with mail merge.

Learn how to get Microsoft and Xbox gift cards for friends and family that can be redeemed for apps, games, movies, devices, and more.

This page is for Microsoft 365 Basic, Microsoft 365 Personal, and Microsoft 365 Family subscriptions only. For help with other subscriptions purchased through Microsoft see Cancel a Microsoft subscription. If you purchased a Microsoft subscription from Google Play or the Apple app store, contact their customer support for cancellation or refund.

使用 Microsoft 帐户登录到 Microsoft 服务，如 Windows、Microsoft 365、OneDrive、Skype、Outlook 和 Xbox Live。

If you're having trouble changing payment options for your Microsoft account, here are some answers to common issues that may occur when you change a payment method.

Learn how to troubleshoot when the camera is not working in Windows or you see errors 0xA00F4244 or 0x200F4244.

To import a text file, you can open the file or import the text file as an external data range. To export a text file, use the Save As command.

Email与 Microsoft 帐户关联的地址和电话号码称为别名，它们使用相同的联系人、在线存储、订阅和帐户设置。 可以使用任何别名登录到 Microsoft 服务或 Windows 和 Xbox 设备，并且可以选择其中任何一个来发送和接收电子邮件。

Learn how to record Teams meeting. Capture audio, video, screen sharing activity, and troubleshoot recordings in Microsoft Teams.