**** Device Connectivity Tests **** iPodService 11.0.5.5 (x64) is currently running. iTunesHelper 11.0.5.5 is currently running. Apple Mobile Device service 3.3.0.0 is currently running. I plug in my iphone to my notebook and I tried USB 3.0 and 2.0 port, but nothing response from iTunes. Windows 8.1 installed the driver for iphone automatically and I can open my picture on iphone through Windows 8.1. Anyway to solve this problem ?
Cant help really but, I installed today Itunes x64 and plugged in the Iphone 4. The driver is installed automatically and Itunes showed it. So it´s not because Windows 8.1 Try that: delete Itunes and other software like that. delete driver for Iphone Download Itunes again, install and login to the store and connect your IPhone again.
Remove everything: iTunes, Apple Mobile Device, Apple Driver From Devices under my computer. Restart your PC and then re-install iTunes. iPhone 4s on iTunes x64 latest working flawless here on Win 8.1 RTM