QFECHECK is a command-line tool that an administrator can use to verify the installation of Windows 2000 (and Windows XP) hotfixes. The tool, available as a free download, enumerates all of the fixes currently installed on a system by their Microsoft Knowledge Base article number (the "Q number"). If a given fix is not installed, it is separately enumerated; that way, you don't have to waste time installing fixes on a system that may already have been installed.

You can download QFECHECK at these URLs.

Windows 2000
Windows XP
IA-64

The tool enumerates all of the fixes currently installed on a system by their Microsoft Knowledge Base article number (the "Q number"). If a given fix is not installed, it is separately enumerated; that way, you don't have to waste time installing fixes on a system that may already have been installed.

QFECHECK works by reading the Registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates for information about currently installed hotfixes. That information is compared against what's actually on disk. If a given hotfix is installed, but the binary for the hotfix is not current, QFECHECK reports an error and indicates which update isn't up-to-date. The resulting file is also checked against the Windows File Protection catalog to see if it has been damaged or modified. If the extant file is damaged, QFECHECK uses WFP to roll the file back to the last known good version.

You can also use the tool to dump a log of the fixes that are present, by redirecting output to a text file using the /L option. Typing QFECHECK /L:<logname> will write a copy of the program's output to the path and file specified in <logname>.


Serdar Yegulalp is the editor of the Windows 2000 Power Users Newsletter.


This was first published in July 2002

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