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.
iTunes error 9 is a possible security software issue that usually comes up when you are trying to upgrade/restore your firmware on iPhone, iPad, or iPod. This could be firewall blocking access to specific websites/web resources (like iTunes trying to download something from Apple's servers).