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NOTE: %WinDir% is general syntax for system root drive, it means if Windows is installed on C: drive then %WinDir% can be replaced with C:\. Then simply type SFC /SCANNOW or sfc /scannow command (it’s not case-sensitive) and hit Enter key. In the Windows search box, type cmd and pick Command Prompt from results, right click it and select Run as administrator.Ģ. To use SFC /SCANNOW command, you have to open administrative or elevated Command Prompt aka Command Prompt with administrative privileges. So let us discuss the various scenarios when you run SFC /SCANNOW and different results are obtained with it: How To Use System File Checker To Repair Windows 10/8/7ġ. Of all these parameters, /SCANNOW is one of the most popular and used syntax. OFFWINDIR : For offline repair specify the location of the offline Windows directory. OFFBOOTDIR : For offline repair specify the location of the offline boot directory. VERIFYFILE : Verifies the integrity of the file with full path placeholder. Specify full path by substituting it with placeholder.
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SCANFILE : Scans integrity of the referenced file, repairs file if problems are identified.
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VERIFYONLY : Scans integrity of all protected system files.
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