iphone 11 pro max cannot connect to iTunes for windows

My wife and I just got the new iPhone 11 Pro Max last Friday and neither of us can connect to her/ or my PC to back up the phones... I can connect to my iMac with no problem but when I connect to her pc, we don’t even get the ‘trust this computer’ notification... absolutely nothing happens... it’s the latest iTunes, we’ve already restarted both the computers and the phones... we even started the phones in recovery mode, and the computer won’t recognize that phone being plugged in... I know Apple is getting away from needing to connect to the computer, but we still would like to do a local hard backup