Microsoft Defender is a new security app that helps protect you and your family across all your devices; Windows, Android, Mac, and iOS.

Whenever you access, change personal info in, or add new contact info to your Microsoft account, we generate a security code and send it to either an email address or a device number in your account security info. You're then prompted to enter that code to confirm the change. Generally, it only takes a few moments to receive the code.

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If you're having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store. The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the ...

If you find an issue with content in the Microsoft Store that you think we should know about, there’s an easy way to report it: Select the item in the Microsoft Store that you want to report. When you reach the product description page, scroll down to Details. Scroll to the right and select More info. Select Report this product and choose the reason you’re reporting it and how you found ...

Before you can use Authenticator as a way to sign in, you need to download the app and have already added Authenticator to your accounts. Starting July 2025, the autofill feature in Authenticator will stop working, and from August 2025, passwords will no longer be accessible in Authenticator.

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

我们竭尽所能，确保 Xbox 网络是欢迎所有人的安全之处，但我们自己独木难支。 如果你认为某玩家违反了 Microsoft 服务协议和 Xbox 社区标准，请进行举报，帮助我们调查违规实例。

It includes features such as Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, which work together to provide real-time protection against viruses, malware, and other security threats.

Can't sign in? Follow these steps to reset your Microsoft account password. You can only sign in to the Xbox app for Windows PC with one Microsoft account at a time. However, you can switch between different Microsoft accounts.