I have exactly the same issue above as posted by Amber. I too have followed
all of the steps above, without success short of uninstalling/reinstalling iTunes. My iPhone is not recognized by iTunes at all, yet my computer does recognize it in Explorer.
I have Windows 8, iPhone 5, and the latest version of iTunes 11.5.5.
Apple Mobile Device shows up under Services, I stopped it, restarted it, and set it to automatic, which it already was but I did that anyway.
However, Apple Mobile Device does not show up under Device Manager.
I have restarted my computer, and turned my iPhone off and back on.
iTunes still does not recognize my iPhone. Every time I plug my iPhone into my computer it asks if I should trust this computer. I say Yes. Minutes later, it will ask me again if I trust this computer.
I have tried my iPhone on another computer and it is recognized by iTunes, but still not my own computer.
Is there any way to download and install Apple Mobile Device without removing iTunes and ALL of it's associated programs? I'd hate to have to go that far. I've done that in the past and lost music.