So the latest versions of i Tunes and of i OS for your i Devices won’t work on Windows XP or Windows Vista.
Please check Apple’s i Tunes site for the latest version out there.
This link provides you with both the Windows and the Mac versions.
Apple does offer anyone with an i Device to visit an Apple store use their Mac’s for your i Tunes management. Or another option is to treating your i OS 10 devices as standalone devices and perform all backups, restores, etc via i Cloud.
Apple knows that the i Tunes interface is extremely confusing and needs work.
If you suspect you are in that category, check Apple Support’s website to see the specifications of Macs that can use the latest mac OS updates.