Description of the Windows 2000 System File Checker Tool

ID: q222471

This article discusses a beta test product not yet announced by Microsoft. Please feel free to familiarize yourself with this product, test it, and report problems to Microsoft.

The information in this article applies to:

Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server

SUMMARY

This article describes the System File Checker (Sfc.exe) tool, which is used with the Windows File Protection (WFP) feature.

MORE INFORMATION

The System File Checker tool gives an administrator the ability to scan all protected files to verify their versions. The System File Checker tool also checks and repopulates the %Systemroot%\System32\Dllcache folder. If the Dllcache folder becomes damaged or unusable, you can use the "sfc /scanonce" (without quotation marks) or "sfc /scanboot" (without quotation marks) command to repair its contents.

System File Checker Tool Syntax

Sfc [/Scanonce] [/Scanboot] [/Cancel] [/Quiet]

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

/Scanonce - Scans all protected system files once.

/Scanboot - Scans all protected system files every time you start your computer.

/Cancel - Cancels all pending scans of protected system files.

/Quiet - Replaces all incorrect file versions without prompting the user.

For additional information about the Windows File Protection feature, please see the following article in the Microsoft Knowledge Base:

Q222193 Description of the Windows 2000 Windows File Protection Feature

Additional query words: compatguidechange wfp sfp


Keywords          : kbtool kbWinOS2000 
Version           : WINDOWS:2000
Platform          : WINDOWS 
Issue type        : kbinfo

Last Reviewed: July 8, 1999