Having defined a test program model, the test team constructs a test architecture, which depicts the structure of the test program and defines the way that test procedures will be organized in support of the test effort.
To verify this problem, just connect your iPhone to a different USB port on the computer. Try installing/reinstalling latest version of iTunes. Install the latest version of iTunes (v12.2.1.16) for Windows 10 on your computer.
Connectivity issue: On rare occasions a connectivity issue with the update server could be the reason iTunes Error 3194 crops up. If none of the aforementioned fixes work out, try to update or restore your iOS device to some other PC, having a different internet connection.[Source: Apple via iPhone hacks ].ow to fix iTunes Error 3194, 17, 1639 and other issues when updating or restoring your iOS device.