System File Checker: Difference between revisions

Revision as of 15:25, 16 February 2024

Revision as of 15:26, 16 February 2024

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If it finds a problem, it will attempt to replace the problematic files from the ''DLL Cache'' (<code>%WinDir%\System32\Dllcache\</code>). If the file is not in the DLL Cache or the DLL Cache is corrupted, the user will be prompted to insert the Windows installation media or provide the network installation path. System File Checker determines the Windows installation source path from the registry values <code>SourcePath</code> and <code>ServicePackSourcePath</code>.<ref>{{cite web|url=http://support.microsoft.com/kb/885522|title=System File Checker does not accept a network ___location that contains the installer CD when you use the scannow switch in Windows XP SP2 or in Windows Server 2003|date=January 13, 2005|work=Support|publisher=[[Microsoft]]|url-status=dead|archive-url=https://web.archive.org/web/20070116014009/http://support.microsoft.com/kb/885522/|archive-date=January 16, 2007}}</ref> It may keep prompting for the installation media even if the user supplies it if these values are not correctly set.<ref>{{cite web|url=http://support.microsoft.com/kb/900910|title=You are prompted to insert a Windows XP SP2 CD when you try to run the System File Checker tool on a Windows XP SP2-based computer|date=July 5, 2005|work=Support|publisher=[[Microsoft]]|url-status=live|archive-url=https://web.archive.org/web/20070207090302/http://support.microsoft.com/kb/900910|archive-date=February 7, 2007}}</ref>

In Windows Vista and onwards, files are protectedgprotected using [[Access control list]]s (ACLs), however, the above command has not changed.

System File Checker in Windows Vista and later Windows operating systems can scan specified files. Also, scans can be performed against an offline Windows installation folder to replace corrupt files, in case the Windows installation is not bootable. For performing offline scans, System File Checker must be run from another working installation of Windows Vista or a later operating system or from the Windows setup DVD<ref>{{Cite web|url=http://www.craxworld.com/system-file-checker-tool-windows-11822/|title=Run System File Checker Tool to Repair Windows 10/8/7 files|last=kumar|first=Rohit|date=26 July 2016|website=Craxworld|publisher=Self Published|url-status=dead|archive-url=https://web.archive.org/web/20160911000021/http://www.craxworld.com/system-file-checker-tool-windows-11822/|archive-date=September 11, 2016}}</ref> or a recovery drive which gives access to the [[Windows Recovery Environment]].