iDevice Pro cannot see any Contacts, Calendars, SMS/WhatsApp/iMessages or Read/Write backups on iPhone XS. When I try any of these it always starts by 'Creating Backup' then fails with 'Could not connect to Device database. Please create a new device backup etc....'.
I have tried all the steps in the Connection iPhone Xs with iDevice Manager does not work thread. That did not help. I have made totally fresh backups (unencrypted) with iTunes which did not help. iDevice Manager can see all backups from my other devices but does not show any backups from iPhone XS.
I have now renamed the iTunes Backup folder and made a new empty one and tried to create a backup from iDevice Manager. It sticks at 'Prepare System and read data from device' and will not do anything. If I make a backup from iTunes at least iDevice Manager will start talking to the iPhone again but still cannot read backups or see any Contacts etc.
iManager connects fine with iDevice Manager each time. Running iOS 12.01, iTunes 126.96.36.199, iDevice Manager 188.8.131.52 and Windows 10 (updated today).
My iPad mini 4 and my iPad Air 2, both on iOS 12.01 work perfectly. It is only the iPhone XS which has problems.