Run the SFC command when troubleshooting a buggy Windows system. RELATED: How to Scan for (and Fix) Corrupt System Files in Windows Run the SFC Command to Repair System Files

On Windows 7 and earlier, Microsoft offers a downloadable “System Update Readiness Tool” instead. If a file has been modified, it will automatically replace that file with the correct version. If the SFC command doesn’t work, you can also try the Deployment Image Servicing and Management (DISM) command on Windows 8, 10, or 11 to repair the underlying Windows system image. The System File Checker (SFC) tool built into Windows will scan your Windows system files for corruption or any other changes. RELATED: Everything You Need to Know About the Blue Screen of Death If Windows is experiencing blue-screen or other crashes, applications are failing, or some Windows features just aren’t working properly, there are two system tools that might be able to help. If a file has been modified, it will automatically replace that file with the correct version.

The System File Checker tool built into Windows can scan your Windows system files for corruption or any other changes. If SFC fails to run properly or cannot repair the files, run 'DISM /Online /Cleanup-Image /RestoreHealth' to fix any remaining issues. Open Command Prompt or PowerShell as administrator, then run 'sfc /scannow' to fix corrupted Windows System Files.

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