iPhone Sync session failed to start
For the past couple weeks, I can't sync my iPhone SE due to a 'sync session failed to start' message. I'm in Windows 10. I have tried restarting/updating everything, connecting with iTunes closed, using a different cable/trying wireless sync, reinstalling iTunes. Nothing works! Only thing I haven't tried is restoring the iPhone – now of course, the latest backup is after the problems started. Any suggestions?
iPhone SE, Windows 10, HP Envy desktop