Scanning for corrupted files on Windows 11 is a straightforward process. You can use built-in tools like the System File Checker (SFC) and Deployment Imaging Service and Management Tool (DISM). These tools help you identify and fix corrupted files that might be causing issues on your PC.
How to scan for corrupted files Windows 11
Running a scan for corrupted files on Windows 11 helps ensure your system runs smoothly. Below are the steps to follow.
Step 1: Open Command Prompt as Administrator
First, you’ll need to access the Command Prompt with administrative privileges.
To do this, right-click the Start button and select ‘Windows Terminal (Admin)’ or ‘Command Prompt (Admin).’ A prompt may appear asking for your permission to make changes; click ‘Yes.’
Step 2: Run System File Checker (SFC)
Next, type the command sfc /scannow
in the Command Prompt and hit Enter.
This command initiates the System File Checker tool, which scans for corrupted system files. The scan may take some time, so be patient.
Step 3: Wait for the Scan to Complete
Allow the scan to run its course without interrupting it.
The SFC tool will automatically fix any corrupted files it finds. Once the scan is complete, you’ll receive a message indicating whether any corruption was found and fixed.
Step 4: Run DISM Tool if Needed
If the SFC tool couldn’t fix some issues, you can use the DISM tool. Type DISM /Online /Cleanup-Image /RestoreHealth
and press Enter.
The DISM tool checks the Windows image for issues and repairs them. Like the SFC tool, the DISM tool may take a while to run, so grab a cup of coffee while you wait.
Step 5: Restart Your Computer
After the scans are complete, restart your computer to finalize the repairs.
Rebooting ensures that any changes made by the SFC or DISM tools take effect, helping your system run more efficiently.
After completing these steps, your Windows 11 system should be free of corrupted files, which can improve performance and stability.
Tips for scanning for corrupted files on Windows 11
- Make sure your computer is plugged in or has sufficient battery life before starting the scans.
- Close unnecessary applications to speed up the scanning process.
- Regularly running these scans can preemptively catch issues before they become major problems.
- Keep your Windows 11 software updated to minimize the risk of file corruption.
- Consider creating a system restore point before running these scans, just in case something goes wrong.
Frequently Asked Questions
What if the SFC scan finds files but can’t fix them?
If the SFC scan finds corrupted files but cannot fix them, use the DISM tool as explained in Step 4 to repair the Windows image.
Can I use these tools on other versions of Windows?
Yes, both the SFC and DISM tools are available on Windows 7, 8, 10, and 11.
Do I need an internet connection to run these scans?
The SFC tool does not require an internet connection, but the DISM tool may need one if it needs to download files from Windows Update.
Will running these scans delete any of my personal files?
No, these scans only target system files and should not affect your personal data.
How often should I run these scans?
Running these scans every few months or when you notice system issues is a good practice.
Summary
- Open Command Prompt as Administrator.
- Run System File Checker (SFC) with
sfc /scannow
. - Wait for the scan to complete.
- Run DISM tool with
DISM /Online /Cleanup-Image /RestoreHealth
if needed. - Restart your computer.
Conclusion
Keeping your Windows 11 system free from corrupted files is essential for maintaining optimal performance and stability. By following the steps outlined above, you’ll be well on your way to ensuring your computer runs smoothly. Regular scans with the System File Checker (SFC) and Deployment Imaging Service and Management Tool (DISM) can help catch issues early, preventing them from escalating into more significant problems.
If you’re new to these tools, don’t worry; they’re user-friendly and provide clear instructions throughout the scanning process. These scans don’t just fix issues; they also give you peace of mind knowing your system is in good shape. So, take the time to run them periodically. You’ll thank yourself later when your computer runs like a well-oiled machine!
For more detailed guides on managing your Windows system, consider exploring additional resources or reach out to a tech-savvy friend for advice. Keeping your system in tip-top shape doesn’t have to be a chore, and the benefits are well worth the effort. Happy scanning!

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.