HT5191: About the security content of iTunes 10.6Learn about About the security content of iTunes 10.6
Currently Being ModeratedMar 26, 2012 1:39 PM (in response to Balinas)
To install the utility, doubleclick the msicuu2.exe file you downloaded.
Now run the utility ("Start > All Programs > Windows Install Clean Up"). In the list of programs that appears in CleanUp, select any iTunes entries and click "Remove", as per the following screenshot:
Quit out of CleanUp, restart the PC and try another iTunes install. Does it go through properly this time?