wdat

Thank you both for the quick responses. Unchecking "hotfix uninstaller" and "MUI cache" did the trick. Seems so simple in retrospect.

I have a Windows XP-SP2 machine that only had WEP wi-fi authentication at time of purchase. I susbsequently installed Microsoft hotfix KB917021 to activate WPA authentication. When I run CCleaner (v2.03.532) registry cleaner, 31 uninstallers and 3 MUIs associated with KB917021 are detected and, if I delete them, I lose WPA authentication and have to reinstall the hotfix. Q: Is there a convenient way I can continue to use the registry cleaner without having to "identify and uncheck" these 34 items each time? Pls advise. Thank you.