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 ...

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A file in SharePoint, OneDrive, or Teams is blocked. What do you do? Read this article to learn why this is happening and steps you can take.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Learn how to use and install mobile apps on your Windows 11 PC with the Windows Subsystem for Android™.

This security update provides the latest changes for the Windows Security app. The update is composed of the Windows Security app and its underlying service. This update applies to only Windows 11 devices (build 22000 or later) To determine the current running version of the Windows Security app, run the following PowerShell command: Get-AppPackage Microsoft.SecHealthUI Windows Security ...

什么是Microsoft启动器？ Microsoft Launcher 提供了新的主屏幕体验，使你能够在所有设备上提高工作效率。 Microsoft Launcher 是高度可自定义的，允许你在手机上组织所有内容。 通过个性化订阅源，可以轻松查看日历、执行列表和便笺。 将 Microsoft Launcher 设置为新的主屏幕时，可以使用喜欢的应用重新开始 ...

了解如何在 Android 手机或平板电脑上安装Microsoft 365 Copilot 应用，并将应用与 Microsoft 365 配合使用。

Learn how to use Microsoft Translator in the Edge browser to translate webpages.

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