Environment - SBS 2008, Exchange 2007, Outlook 2007, iPhone. Background- I have a client that has Outlook 2007 installed on both a desktop and laptop. The user is also syncing Exchange data via Active Sync to an iPhone 4s. The user was previously using a BlackBerry syncing Exchange data via a BES Express server installed on the SBS 2008 server. To further complicate matters the user was also using Chapura Folder Mirror to sync BCM contacts to the BlackBerry. Problem - I swapped the BlackBerry for an iPhone 4s and after doing so the users contacts began duplicating exponentially. At first it would only duplicate specific contacts and then began duplicating all contacts. Eventually the user had over 75,000 contacts in Outlook and Exchange. Steps Taken - 1) The issue appeared to be the BCM contacts being dumped into the iPhone contacts folder on the iPhone and creating a loop. I installed a free Outlook duplicate remover and removed the duplicate contacts. I stopped the Chapura Folder mirror sync. No luck the contacts began duplicating again. 2) I used the duplicate remover and again removed all duplicates from Outlook. I checked the BES server and noted the users account was still active. I removed the users account and all BES info from Exchange. I verified all contact data in Exchange was correct using OWA, removed the ost file from the desktop and opened Outlook to reload the ost. I performed the same procedure with the laptop. I again verified the laptop and desktop were properly syncing contact data. All contact data was in sync on Friday. I checked on Monday morning and contact data was again duplicating. I am out of ideas and sanity. Any help would be very much appreciated.

Hello, Is there any update on this thread? Thanks, Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

Hello All, This issue is stated all over the forums of MS as well as Apple. Diagnosing further, I felt, this is an issue of Apple OS which is responsible to crash contacts app. You can debug more going to the below option in iPhone. Settings> General>About>Diagnostics & Usage Data I would submit my further diagnosys here in..