Exchange 2010 and iphone calendar sync issues

Hey,
I know this question has been asked plenty of times before and just need a straight resolution. We have just migrated our environment to Exchange 2010 and the major issue is that when an event is created in Outlook 2011 it is not always showing up on their iphone and also vis versa. Is their a resolution to this problem so I can implement it in an emergency change. Thank you for all your help!

Here let me explain the scenario again any user who logs in to exchange from outlook working fine password not expired and he has iphone active sync working no issues , now while all devices are working when he starts his ipad after a week or so when he
opens his email on ipad it prompts the password on ipad and same time on iPhone , he does not want to enter the password and wants a technical justification , I told the user something to do with Exchange 2010 sp2 and ios 7 ,but that is invalid justification
. if you have any other valid justification please let me know. or a solution to this issue. user wants to login without any password prompt while the password is saved in device and not expired , is there any feature in Exchange 2010 sp2 that would recognize
how many days device has not logged it and would force to enter the password.

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upon syncing my iPhone and mac all of my ical and iPhone calendar events have duplicated. how can i fix this and avoid it in the future?

Greetings,
Questions:
1. What version of the Mac OS are you running (Apple > About this Mac)?
2. What version of the iOS are you running (Settings > About)?
3. Do you backup your computer (http://support.apple.com/kb/HT1427)?
--- If you don't regularly backup your computer, now is the time to start.
4. Do you backup your iPhone (http://support.apple.com/kb/ht1766)?
Check the calendar list on the left hand side of iCal. Is it that the individual events are duplicated or is it just that you have the same calendar listed more than once? If its that you have more than 1 copy of each calendar, you can delete one of the duplicate calendars to eliminate the duplicates.
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2. Use a duplication removal program (or do it by hand) to remove the duplicates: http://www.nhoj.co.uk/icaldupedeleter/
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Keep regular backups. They are your best defense against data anomalies which are a fact of life in computers (although hopefully rare).
Keep your computer and iPhone software fully up to date (Apple > Software Update / Settings > General > Software Update).
Make sure the date and time on your computer and iPhone are correct before you sync the two devices.
Make sure the cable connections between the two is solid and that the cable shows no signs of physical damage.
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Hello,
We are in coexitence organisation (transition Migration) Exchange 2003 sp2 and Exchange 2010 sp1.
Users in Exchange 2003 use outlook 2007 and outlook 2010
Users in Exchange 2010 use outlook 2007, outlook 2010 and outlook 2013.
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Hi,
Does this issue occur on Outlook only or both Outlook and OWA?
Since you have double checked the permissions via multiple methods, it seems there is nothing problem on permission. Please make sure the migration from Exchange 2003 server completed successfully.
If in OWA everything goes well (cannot see details), it should be an issue on the Outlook client side.
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I suggest re-create profile to refresh the caches.
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Mavis
Mavis Huang
TechNet Community Support

Exchange 2010 and iphone calendar sync issues

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