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Duplicate calendar items on Outlook 2011 and iPhone

Hello all,

I have a user who is set up with an Exchange mailbox on an SBS2008 server running Exchange 2007. The user has their calendar shared to someone who makes changes to the calendar from a Windows 7 pc running Outlook 2010. The user also has the Exchange mailbox connected to an Outlook 2011 for Mac client using RPC over HTTP as well as ActiveSync on their iPhone. Don't know if this matters as well but the user also has a MobileMe account only syncing contacts on the iPhone to the MobileMe cloud. The problem is that the user is getting duplicate and multiple calendar items in their iPhone and Outlook 2011 for Mac client. From what I've seen I haven't noticed any duplication/multiplication of the calendar items on the Outlook 2010 for PC client, so I believe that it's only occuring on the Mac and iPhone. Any ideas here guys? Would appreciate any assistance.
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Leverage IT Consulting
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Leverage IT Consulting
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1 Solution
 
AsifCCommented:
Are any of the duplicates reoccurring events? Were they modified when the duplicates showed up?
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Leverage IT ConsultingAuthor Commented:
I believe the duplicates are reoccurring. It doesn't look like they were modified though.
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_13Commented:
Root Cause:
Exchange Active Sync issue.

Solution:
1. Open user mailbox profile using MFCMapi.
2. Go to directory Exchange Active Sync.., shift+delete all phones (no data loss will occur)
3. Go to calendar folder, sort by date or subject, shift+delete duplicates.
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Leverage IT ConsultingAuthor Commented:
Found out it was MobileMe causing duplicate items in calendar. Disabled MobileMe calendar to resolve issue. Thanks for the help guys.
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Leverage IT ConsultingAuthor Commented:
Selected my own solution due to troubleshooting on my own,
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