Learn how to identify a phishing scam, designed to steal money via fake emails.

详细了解如何为 Xbox 订阅或数字产品申请退款。

Learn how you can manage cookies and site data you've temporarily allowed in Microsoft Edge.

了解如何重置更改 Microsoft 帐户密码。 获取有关忘记 Microsoft 帐户密码的帮助。

If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

Registering your Microsoft device. Before you can check your warranty or get service, you may need register your Surface or Xbox to your account.

Internet Explorer 11 support ended on June 15, 2022. We recommend you use Microsoft Edge for a faster, more secure and more modern web browsing experience.