Exchange Calendar iPhone Sync

We have been experiencing an on going issue with a user who's Exchange Calendar will not fully sync on his iPhone. The calendar events update correctly in both Outlook and on his iPad but not the phone. Both the iPad and iPhone are running the latest version of iOS. In the past we resolved the issue by recreating the sync partnership with the device on the server itslelf and also by removing and adding the calendar back to the phone. Both fix the issue for 3 - 4 weeks on average before it happens again.
The Exchange server itself is running the latest rollups. We have other users with similar set ups but the issue has only been reported by one user. Are there any iPhone settings I may be missing that we could try? This user relies heavily on his meeting information to be accurate to work and it has created several issues for him.
Thank you,
Chris

I've run into this a lot lately. Being sure to check both the default calendar in Settings - Mail, Contacts, & Calendars and the Calendars tab in the Calendar App after resyncing the Exchange account; the issue seems to repeat itself a few days or a week later. It's not happening with all of our end users, but enough for me to think it has something to do with iOS 8.1.2 (or at least 8.1.2. on the 5S). Clicking on the Calendar app, Calendars, and Hide all Calendars, and then Show All Calendars and done, seems to fix (essentially toggling Hide All Calendars off/on). I've been using this for two weeks, and so far so good. I will update if the issue rears its' ugly head again.

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For some strange reason our Exchange 2007 (latest SP) does not sync the calendar on one of our 2G iPhones setup with Exchange.
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I'm having a strange issue with syncing calendars from my iPad and iPhone to our Exchange server. I have three calendars in Exchange, which I'll call Calendar1, Calendar2 and Calendar3. Calendar1 was my original calendar, and I added the other two later.
I have my Exchange account set up on my iPad and iPhone. Calendar1 syncs correctly in all directions. If I create an appointment in Outlook in Calendar2 or Calendar3, the appointment appears on my iPhone and iPad, as it should. The problem is that if I create an appointment on the iPad or iPhone in Calendar2 or Calendar3, the appointment never appears in Outlook or on the other device.
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iPhone 4, updated to iOS 5
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I cannot get my calendar on my Mac to sync with my Iphone. My work calendar which is exchange is sync'd but i REALLY need my personal one to as well.

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https://discussions.apple.com/thread/5460803?start=0&tstart=0
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<Edited by Host>

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Message was edited by: Stanley Wong
Message was edited by: Stanley Wong

I don't think the solutions here are for the question that's posed.
I have an Exchange account set up on my iPhone 4. I want my Exchange calendar to sync with my Google calendar. I set up Google Sync, and I can see both calendars. However, there doesn't seem to be a way to get the two calendars to sync with each other. i.e., if I create an event on my iPhone, it doesn't push to both calendars. I have to pick one or the other.
The solution Stanley Wong suggested only sets Google as your default calendar; it doesn't actually sync the calendar events between the Exchange and the Google calendars. Unless I missed something?
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Looking for exchange calendar sync groupcal *****

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I wasted money and so much time on this app, is there anything else out there that does a better job?

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Hi,
Please try to collect IIS log and then use "activesync" as keyword to have a search.
Also we can use logparser to analyze the log.
http://technet.microsoft.com/en-us/scriptcenter/dd919274
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TechNet Community Support

IPhone to Exchange calendar sync issues

OK, I have read through many posts on here, but have yet to find a post that describes my situation. If someone has seen this answered in other places, please let me know.
I currently have the following setup:
iPhone 2.2.1, using OTA sync with Exchange
Entourage 2008 (not Outlook/Windows)
Exchange server 2007 (at work, I am not the guy who runs it)
My mail and contacts work fine.
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I get syncs fine for calendar when accepted through Entourage - but when they are updated by the original senders I get multiple entries for every event showing up on my phone (the old events aren't removed). In addition, my phone does not sync back to the Exchange server when I accept invitations, nor when I create entries in my calendar.
Thoughts?

This problem is only something I've had problems with recently. Previously entries in the Calendar would sync OK regardless of where they were created or accepted. So appointments I logged on the road into the phone would work back into Exchange and onto Entourage.
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Now, it seems I am ONLY getting push from Exchange to the iPhone. Calendar entries from Entourage appear on the phone.
Any calendar entries created on the phone or invites accepted on the phone stay on the phone. They are not synced back to Exchange and onto my Entourage calendar.
As someone who is office based for only a few days a month, effective Calendar sync is vital.
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Thanks James, however I have tried that numerous times. Even tried to restore the phone to factory settings however I am getting an error that prevents the restore. I'm starting to believe there is something wrong with the phone.

Exchange Calendar iPhone Sync

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