What Is the System File Checker, and How Do I Run It?
✏️ The System File Checker is a little-known, simple-to-run command-line program. It validates that Window's operating files are undamaged.
SFC: System File Checker
SFC scans your system files and confirms they have not been compromised or replaced with unofficial versions. If an unexpected version is found, SFC attempts to restore it from copies or original installation media. Run SFC by entering “SFC /scannow” in an admin Command Prompt or PowerShell.
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Chapters
0:00 System file protection
1:39 Reasons files change
2:24 Why so many copies?
3:09 Repairing altered files
3:58 Running SFC: the System File Checker
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