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Damaged system component

I am missing all or a part of the windowsrundll32.exe system component. How do I get it back?
If you have a missing or damaged system component, type SFC /SCANNOW and have your installation CD ready. This double-checks all crucial system components to make sure they're valid. You may need to also reinstall the most recent Service Pack after you do this. (Note that you are probably referring to RUNDLL32.EXE, as there is no file named WINDOWSRUNDLL32.exe in Windows.)
This was last published in February 2005

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