Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend moving to Windows 11. Learn more. Note: Use these steps for Windows programs.

Provides servicing stack update for Windows Server 2016 and Windows 10, version 1607.

Learn more about update KB4497398, including improvements and fixes, any known issues, and how to get the update.

Learn more about this servicing stack update, including improvements and fixes, any known issues, and how to get the update.

Learn more about update KB4565552, including improvements and fixes, any known issues, and how to get the update.

Provides a servicing stack update for Windows 10, version 1703.

Addressed an issue in which adding vulnerable boot level components to the Secure Boot disallow list (dbx) may cause the system not to start. We strongly recommend you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU).

Learn more about this servicing stack update, including improvements and fixes, any known issues, and how to get the update.

このセキュリティ更新プログラムには、Windows 10 Version 1511 および Windows Server 2016 Technical Preview 4 の機能の 強化と修正 が含まれています。 さらに、Windows の次の脆弱性を解決します。 Windows 10 および Windows Server 2016 の更新プログラムは累積的です。 つまり、このパッケージにはこれまでにリースされたすべての修正が含まれています。 以前の更新プログラムをインストールしている場合は、このパッケージに含まれている新しい修正のみがダウンロードされ、コンピューターにインストールされます。