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System File Checker (SFC) is a Windows 10 utility that helps administrators to check for file corruption. The executable utility may help to repair registry data. System File Checker is a feature of modern Windows operating systems including Windows 10, Windows 8, Windows 7 and Vista.
With System File Checker, users can open a command prompt window and trigger a system scan that shows whether protected system files may be corrupted. Microsoft recommends not closing the command prompt window until completion of the scan.
System File Checker may return one of several messages – for example, System File Checker may say that the utility did not find integrity violations. System File Checker may say that the system could not perform the operation. The utility may also indicate that the system found corrupt files and repaired them. If System File Checker is not able to fix corrupted files, users can go in and replace them manually.