This cumulative update for Windows 11, version 23H2 (KB5078883), includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For ...

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To see where your browser is saving downloads, look in your browser's settings. For example, in the new Microsoft Edge , select Settings and more > Settings > Downloads . The file path for your downloaded files (for example, C:\Users\ [your name]\Downloads) is listed under Location. In Microsoft Edge Legacy , select Settings and more > Settings . Then scroll down to the Downloads section. The ...

Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows.

Use the Information Protection viewer to view protected files in Windows, Android, iOS, or Edge.

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

Discusses the release of the Malicious Software Removal Tool (MSRT) to help remove specific prevalent malicious software from Windows-based computers.

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 ...

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.

惡意軟體或安全軟體問題 如果你想移除惡意軟體或可疑應用程式： 使用 Windows 安全性 來執行掃描。 只有在清除威脅後才移除應用程式。 如果上述步驟仍無法解決問題，請聯絡應用程式發行商尋求支援，或考慮重新安裝Windows 11使用 「重置此電腦」 (保持檔案) 。 更多資訊請參考 如何重置你的電腦。