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 ...

If you think your Microsoft account has been hacked, find out how to secure your account and check for unauthorised activity.

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Learn how you can use the free Microsoft Authenticator app to sign in to all your accounts without using a password.

使用 Authenticator 登入 如果您已開啟帳戶的無密碼、雙步驟或多重要素驗證，請使用下列步驟登入： 移至您要登入的網站。 在登入提示中輸入您的使用者名稱，然後選取 [下一步]。 選 取 [傳送通知]。

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？

Xbox Support ... Xbox Support

Learn how to set up Xbox Cloud Gaming on your Android phone or tablet. Includes steps for installing the Xbox app, using invite links, and streaming games with Game Pass Ultimate.

Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.

自 2025 年 3 月 19 起，不再支援適用於行動裝置的 Xbox Game Pass。 取得有關在其他裝置上進行雲端遊戲的詳細資訊。