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MS - DOS Command

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Microsoft DOS sfc command

Quick links

About sfc
Availability
Syntax
Examples

About sfc

Scans and replaces any Microsoft Windows file on the computer and replaces any changed file with the correct version. This is a great command to run when you are running into an issue that is difficult to troubleshoot.

Availability

The sfc.exe command is an external command that is available in the below Microsoft operating systems.

Windows 2000
Windows XP
Windows Vista
Windows 7

Syntax

Microsoft Windows 2000 Syntax

Microsoft(R) Windows 2000 Windows File Checker Version 5.00
(C) 1999 Microsoft Corp. All rights reserved

Scans all protected system files and replaces incorrect versions with correct Microsoft versions.

SFC [/SCANNOW] [/SCANONCE] [/SCANBOOT] [/CANCEL] [/ENABLE] [/PURGECACHE] [/CACHE SIZE=x] [/QUIET]

/SCANNOW Scans all protected system files immediately.
/SCANONCE Scans all protected system files once at the next boot.
/SCANBOOT Scans all protected system files at every boot.
/CANCEL Cancels all pending scans of protected system files.
/QUIET Replaces all incorrect file versions without prompting the user.
/ENABLE Enables Windows File Protection for normal operation
/PURGECACHE Purges the file cache and scans all protected system files immediately.
/CACHESIZE=x Sets the file cache size

Microsoft Windows XP Syntax

Microsoft(R) Windows XP Windows File Checker Version 5.1
(C) 1999-2000 Microsoft Corp. All rights reserved

Scans all protected system files and replaces incorrect versions with correct Microsoft versions.

SFC [/SCANNOW] [/SCANONCE] [/SCANBOOT] [/REVERT] [/PURGECACHE] [/CACHESIZE=x]

/SCANNOW Scans all protected system files immediately.
/SCANONCE Scans all protected system files once at the next boot.
/SCANBOOT Scans all protected system files at every boot.
/REVERT Return scan to default setting.
/PURGECACHE Purges the file cache.
/CACHESIZE=x Sets the file cache size.

Examples

sfc /scannow

Begins the scan of all system files.


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