How to Check for Corrupted Files in Windows 11: A Step-by-Step Guide

Learning how to check for corrupted files on Windows 11 is essential for maintaining your computer’s health. This involves using built-in tools to scan, detect, and fix any corrupted system files. By following a few straightforward steps, you can ensure your operating system runs smoothly and efficiently.

Step-by-Step Tutorial: How to Check for Corrupted Files on Windows 11

Want to keep your Windows 11 system in tip-top shape? Here’s how you can scan and repair corrupted files using the System File Checker (SFC) and the Deployment Imaging Service and Management Tool (DISM).

Step 1: Open Command Prompt as an Administrator

To start, you need to access the Command Prompt with administrative privileges.

Right-click the Start button and choose "Windows Terminal (Admin)" or "Command Prompt (Admin)." A User Account Control prompt may appear; click "Yes" to proceed.

Step 2: Run the System File Checker (SFC) Scan

Now, you’ll run an SFC scan to detect and repair corrupted files.

Type sfc /scannow into the Command Prompt and press Enter. The scan might take some time, so be patient. This command will automatically fix any issues it finds.

Step 3: Review the Scan Results

After the scan is complete, you need to check the results to understand what was fixed.

The Command Prompt will display a message indicating whether any corrupted files were found and repaired. If it says, "Windows Resource Protection found corrupt files and successfully repaired them," you’re good to go.

Step 4: Run the DISM Tool (if Needed)

If the SFC scan didn’t resolve your issues, use the DISM tool for a deeper scan.

Type DISM /Online /Cleanup-Image /RestoreHealth and hit Enter. This command might also take a while, but it can fix problems that SFC can’t.

Step 5: Restart Your Computer

Finally, restart your computer to ensure all changes take effect.

A simple reboot can help your system apply the fixes and run more smoothly.

Once these steps are complete, your computer should be in better shape. You’ll notice improved performance and fewer errors.

Tips for Checking for Corrupted Files on Windows 11

  • Always Run as Administrator: Ensure you have administrative privileges to perform system scans.
  • Be Patient: Both SFC and DISM scans can take some time to complete. Don’t interrupt the process.
  • Regular Maintenance: Run these scans periodically to keep your system healthy.
  • Backup Important Files: Before making any system changes, it’s always good to back up your essential data.
  • Stay Updated: Keep your Windows 11 system updated to avoid running into corrupted files frequently.

Frequently Asked Questions

What is SFC?

The System File Checker (SFC) is a built-in Windows tool that scans and repairs corrupted system files.

How long does an SFC scan take?

The duration can vary, but it generally takes around 15-30 minutes.

What if SFC doesn’t fix the problem?

If the SFC scan doesn’t resolve the issue, run the DISM tool for a more thorough scan.

Can I use my computer during the scan?

It’s best to avoid using your computer while the scan is running to prevent any interruptions.

Do I need an internet connection to run SFC or DISM?

SFC doesn’t require an internet connection, but DISM might need one to download necessary files.


  1. Open Command Prompt as an Administrator
  2. Run the System File Checker (SFC) Scan
  3. Review the Scan Results
  4. Run the DISM Tool (if Needed)
  5. Restart Your Computer


Keeping your Windows 11 system free of corrupted files is crucial for optimal performance. By following the steps outlined above, you can easily scan and repair any issues with the built-in SFC and DISM tools. Regular maintenance and staying updated are key to avoiding problems in the future. Remember, a healthy system is a happy system. So, take the time to check for corrupted files on your Windows 11 machine regularly. If you found this guide helpful, don’t hesitate to share it with friends and family who might benefit from it. Happy computing!

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