Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Find out what to do if your Xbox game won’t start or freezes during gameplay.

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？

Discover how Microsoft 365 Copilot Chat can help you streamline your workflow. Get summaries, brainstorm ideas, and find answers quickly with AI-powered assistance.

Join Teams meetings anytime, anywhere, from any device. For the best experience, join from the Teams desktop or mobile apps. If you're having trouble joining a Teams meeting, try these tips: I can't join a Teams meeting.

Tap Calls to see your call history and to access the Teams dial pad and the contacts from your mobile device. Call history includes outgoing, incoming, and missed calls associated with Teams and your Enterprise Voice phone number. To remove a call from your call history: Go to Calls > History. Find the call you'd like to remove and tap Info . Tap Remove .

Learn how to use Snipping Tool to capture a screenshot, or snip, of any object on your screen, and then annotate, save, or share the image.

本文提供有关在移动设备（特别是 Android 和 iOS）上使用 OneDrive 的综合指南。 其中包括有关下载、安装和登录到 OneDrive 应用的分步说明，以及管理文件、共享文件和脱机访问文件。 本文还提供了有关在移动设备上优化 OneDrive 的使用以及排查常见问题的提示和技巧。

Unlock faster task management with Microsoft 365 Copilot in this video guide. Linked to your Microsoft 365 account, enjoy seamless access in-app, on the web, or on the move.

Starting a new chat is simple in Microsoft Teams Free. Send a message to a contact or reach out to someone you haven't chatted with before—they'll be prompted to accept the invitation before joining the chat. Want to do even more in Teams? Learn more about subscriptions for Microsoft Teams Free.