iPhone stops synching with Outlook 2010
My iPhone 5 (iOS 6.1.3) has suddenly stopped synching with Outlook 2010 via iTunes 10.7.0.21 on Windows XP (SP3). New/changed/deleted items on the iPhone don't get transferred to the PC, and vice versa. All of Oulook is affected: Calendar, Contacts, Notes. iTunes indicates it is synching, and reports no problems, and yet the changes don't get transferred. This has occurred suddenly. The system was working fine until today.