WFP, Dllcache, and SFC.exe
 

　　WFP：Windows File Protection
　　SFC：System File Checker
[list][*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;222193]KB222193 - Description of the Windows File Protection Feature[/url][*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;222473]KB222473 - Registry Settings for Windows File Protection[/url][*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;229656]KB229656 - Optimizing Windows File Protection Service[/url][*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;286797]KB286797 - Windows File Protection and Alternative Data Streams[/url][*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;318767]KB318767 - HOW TO: Verify That Windows File Protection Is Running in Windows 2000[/url]
[*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;222471]KB222471 - Description of the Windows 2000 System File Checker (Sfc.exe)[/url][*] [url=http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;310747]KB310747 - Description of Windows XP and Windows Server 2003 System File Checker (Sfc.exe)[/url][/list]