安裝 Microsoft Defender，保護您的Android、iPhone、Mac和 Windows 裝置免於受到威脅。 在您的裝置上下載 Microsoft Defender，方法如下： 掃描下列 QR 代碼 在 App Store 中搜尋 Microsoft Defender 與您的裝置共用，下列連結： 複製連結 我們鼓勵您為每個人至少在五部裝置上安裝 Microsoft Defender。 準備好試試看了嗎？

Find answers to FAQs about denial of service (DoS) and distributed denial of service (DDoS) attacks when you're using the Xbox network on your Xbox console.

Provides information for avoiding and reporting Microsoft technical support scams.

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Learn how to protect your PC, identity, and data from tech support scams.

通过安装 Microsoft Defender，保护 Android、iPhone、Mac 和 Windows 设备免受威胁。 通过以下方式在设备上下载Microsoft Defender： 扫描以下 QR 码 在应用商店中搜索Microsoft Defender 与设备共享，链接如下： 复制链接 我们建议在每人至少五台设备上安装Microsoft Defender。 准备好了尝试一下吗？

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by: Scanning the following QR code Searching for Microsoft Defender in your app store Sharing with your devices, the following link: Copy link We encourage you to install Microsoft Defender on at least five devices per person. Ready to give it ...

Find out what to do when you receive a “Call us overprotective” message when signing in to Xbox.com.

Learn how to identify and open encrypted and protected emails no matter what email client you're using.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.