System File Checker tool can scan and repair missing or corrupted system files in Windows. Learn how to run DISM and SFC commands, view scan results, and manually replace corrupted files.

System File Checker is a utility in Windows that checks for problems with files on your computer. Learn how to run it, update Windows, and find more info about it.

Using this tool will reinstall the current version of Windows on your device. This tool preserves all your apps, documents, and settings. Make sure to keep your PC connected to a power source and the internet during reinstallation. The reinstall will take you to the Windows Update page in Settings.

Troubleshoots and fixes common issues with file and folder operations in Windows.

After installing update KB2821895, you receive an error about corrupt files if you run the command sfc /scannow.

When does the troubleshooter run? The troubleshooter runs automatically on devices running Windows 10, version 1903 or Windows 10, version 1909 and that have detected this issue. The troubleshooter cannot be run manually.

Instead of fix-it tools, Windows 10 uses troubleshooters to help you solve problems. To run a troubleshooter, use the following steps: Select Start > Settings > Update & Security > Troubleshoot > Additional troubleshooters, and then select Additional troubleshooters.

The System File Checker tool gives an administrator the ability to scan all the protected files to verify their versions. The System File Checker tool also checks and repopulates the cache folder (by default, %SystemRoot%\System32\Dllcache).

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

Windows Security (Windows Defender Security Center in previous versions of Windows) enables you to scan specific files and folders to make sure they're safe. You'll be notified immediately if any threats are found.