My iTunes 12.7 doesn't recognize any of my devices. Please help as I can't sync.

I am having the same issue. 😟

ummmm...that's why it's called beta....seriously? Thanks a million? Clearly not a helpful tester. Submit it to the Feedback assistant.

2 workarounds have been suggested in this thread: https://forums.developer.apple.com/thread/82313

1. cnsoft's workaround is to downgrade to itunes 12.6.1.

2. My workaround is to actually fix itunes 12.7 itself. I explained how to do this in that thread and if you follow the steps you can mount devices in itunes 12.7.

workaround 2 listed above worked. After uninstalling listed items it still didn't show my iphone, but after installing the new packages and rebooting everything is back to normal.

Thank you. Have a 10 hour flight coming up and needed to load movies on Ipad.