Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.

详细了解如何为 Xbox 订阅或数字产品申请退款。

Here are the most likely causes for an unrecognized charge: A Microsoft subscription has recurring billing enabled.

有关如何更改 Microsoft 帐户上的名称的说明。

Explains how to sync your Google, Yahoo, iCloud, and IMAP mail, contacts, and calendar to the Microsoft Cloud.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

本文介绍如何获取最新版本的 DirectX 以启用系统上的游戏和多媒体应用程序。

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