Why didn't you use SFC instead?
working on antique functional dell dimension xp sp3; of a sudden april 17, IE7 fails and mandates IE8 duly installed; and thereafter:
after some massive viral disruption, control panel 'add remove' does not display, nor can i toggle from 'classical' to 'category', rather control panel looks like a directory display, remaining control panel icons work, like executables
add/remove is controlled by appwiz.cpl, which is found i system32 and also in dllcache
a manual activation of appwiz in system32 fails; a manual activation in dllcache works; copying the dllcache version to system32 fails to work in system32
a consultant's fancy test of appwiz produces a hex string decoded maybe as unauthorized permission for 'iconindex' for the system32 version so maybe the display is disabled
meanwhile ccleaner's same-function works fine, showing nothing suspicious
arrggghhhh
plausibly malware has disabled this icon to hide itself, and somehow the toggle is part of it
i deleted much other malware, but this glitch remains and maybe others
various spyware comes up clean,
this is a registry problem almost definitely,, i can edit but not yet write new keys in regedit

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