Did you try prior advice such as given at https://discussions.apple.com/thread/4461639?start=0&tstart=0
Bob
While trying to upgrade itunes I get the message "This feature is on a networkresourse that is unavailable. Enter an alternate path to folder containing itunes.msi."
I tried to delete itunes and then reinstall the new version. When I tried to uninstall, it does not work.
Some of the forums say that I may have a corrupted file blocking me.
Any experiences with this issue and its fix?

Chowhound
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GameFAQs
GameSpot
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