SFC Scannow Found Corrupt Files – Repair Windows System

In my experience, encountering corrupt files on Windows systems can be frustrating. However, there is a solution: SFC Scannow. This article will guide you through the process of repairing your Windows system using SFC Scannow.

Symptoms and Error Indicators

Some common symptoms of corrupt files include system crashes, slow performance, unexpected errors, and application failures. You may also notice missing or distorted graphics, audio or video playback issues, and frequent program freezes.

When it comes to error indicators, you may receive error messages such as “Windows Resource Protection found corrupt files but was unable to fix some of them”, or “Windows Resource Protection could not perform the requested operation”. These messages indicate that the SFC Scannow command was unable to repair the corrupt files automatically.

To address this issue and repair your Windows system, there are a few steps you can take:

1. Run the SFC Scannow command again: Sometimes, running the command multiple times can fix the corrupt files. Open the Command Prompt as an administrator and type “sfc /scannow“. Let the command run and see if it is able to repair the files this time.

2. Use the DISM tool: If the SFC Scannow command is still unable to repair the corrupt files, you can try using the Deployment Image Servicing and Management (DISM) tool. Open the Command Prompt as an administrator and type “dism /online /cleanup-image /restorehealth“. This tool can help fix underlying issues with the Windows system image.

3. Perform a system restore: If the above steps do not work, you can try performing a system restore to a previous point in time when your Windows system was functioning properly. This can help revert any changes that may have caused the corrupt files.

4. Use third-party repair tools: If all else fails, you can consider using third-party repair tools such as EaseUS Partition Master or other reputable software. These tools can help scan and repair corrupt files on your Windows system.

Understanding Windows Resource Protection

Windows Resource Protection is a feature in Microsoft Windows that helps protect system files from being modified or corrupted. It ensures that the essential files required for the operating system to function properly are intact and in their original state.

One tool that is often used to check for and repair corrupt files is the System File Checker (SFC) utility. To run the SFC scan, open the Command Prompt as an administrator and type “sfc /scannow” without the quotes. This will initiate a scan of all protected system files and replace any files that are found to be corrupt or modified.

During the scan, the SFC tool checks the integrity of system files by comparing them to the original versions stored in the Windows File Protection folder. If it finds any discrepancies, it automatically replaces the corrupted files with the correct versions.

It’s worth noting that the SFC scan relies on the Windows Resource Protection feature to work effectively. Windows Resource Protection uses mechanisms such as file and folder permissions, Access Control Lists (ACLs), and Windows Registry settings to protect system files.

In some cases, the SFC scan may not be able to repair all the corrupt files. If this occurs, you may need to use additional tools like the Windows Assessment and Deployment Kit (ADK) or third-party software like EaseUS Partition Master to fix the issues.

It’s also important to ensure that your system is in a stable state before running the SFC scan. Boot your computer into Safe Mode or use the Windows Preinstallation Environment (WinPE) if necessary. This will help minimize any interference from third-party applications or services that may be causing the corruption.

If you encounter any error messages or issues during the repair process, it’s recommended to consult the CBS log file for more information. The CBS log contains detailed information about the repair operations performed by the SFC tool and can help in troubleshooting any problems that arise.

Comprehensive Fixes for Corrupt Files

  1. Press Windows Key + X and select Command Prompt (Admin) or Powershell (Admin).
  2. Type sfc /scannow in the command prompt window and press Enter.
  3. Wait for the scan to complete. It may take some time.
  4. If any corrupt files are found, the tool will attempt to repair them automatically.
  5. Restart your computer once the process is finished.

Method 2: Use DISM Command

  1. Open Command Prompt (Admin) or Powershell (Admin).
  2. Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
  3. Allow the DISM command to run and complete the process.
  4. Once the process is finished, restart your computer.

Method 3: Perform a System Restore

  1. Press Windows Key + R to open the Run dialog box.
  2. Type rstrui.exe and press Enter.
  3. Follow the on-screen instructions to choose a restore point and restore your system to a previous state.
  4. Restart your computer after the system restore is complete.

Method 4: Reinstall Windows

  1. Backup all your important data to an external storage device.
  2. Insert the Windows installation media (DVD/USB) into your computer.
  3. Restart your computer and boot from the installation media.
  4. Follow the on-screen instructions to reinstall Windows.
  5. Once the installation is complete, restore your backed-up data.


How do I run DISM command to fix corrupt files?

To run the DISM command to fix corrupt files, open an elevated Command Prompt and enter “DISM /online /cleanup-image /restorehealth”. If the scan fails, try running it in Safe Mode.

Should I run DISM or SFC first?

You should run SFC first before running DISM.

How do I repair corrupted Windows files using SFC Scannow?

To repair corrupted Windows files using SFC Scannow, you need to follow these steps:

1. Click Yes on the User Account Control (UAC) prompt.
2. Open the command prompt window.
3. Type SFC /scannow and press Enter.
4. Wait for the system file checker utility to check the integrity of Windows system files and repair them if necessary.
5. Once the process is complete, restart your computer.

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