Missing Exchange calendar appts

iPhone 4 with 4.1. Syncing to Exchange 2007 using EAS.
Rarely, appts will just not show up on the iPhone. They appear fine in Outlook and Outlook Web Access. The latest one is a recurring weekly appt and none of the instances appear on the phone while all appear in Outlook fine. All other appts are fine. Message class is IPM.Appointment just like all the others.
I even went as far as grabbing a Windows Mobile phone (in order to use the same EAS) and synced the calendar. That appt appears fine on the WinMo device.
Why is the iPhone ignoring it?
Help.

I work for IT Support in a large University. We have had many instances of this happening. First of all it seemed to be more prevelant for our senior managers who had PA's with delegate access to their calendars. When an existing appiontment was updated/changed quite often the whole occurences would be removed from the mobile device. More recently we have noticed it also affects users updating their own calendar appointments, pecifically reoccurring appointments.
We are currently running Exchange 2007 but in the process of upgrading to Exchange 2010. We have moved the affected users mailboxes on to Exchange 2010 and so far we haven't had any further problems from affected users.

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How can I stop Exchange calendar event copies appearing in drafts?

I use Outlook 2010 on a Windows machine at work. On my MacBook I use Outlook 2011 and have the Exchange calendar configured for iCal. Sync'ing works fine, except this one annoyance.
Since upgrading to Mountain Lion copies of existing, repeating calendar events keep appearing in my Outlook drafts folder. Every few days I have to empty it, sometimes from 50 event copies or more.

I too, was experiencing this. There seems to be no indication of a solution anywhere on the web. HOWEVER, I figured it out.
Here's the solution: Strangely, it's not really an exchange issue, but rather an issue with calendaring on the OSX side.
So you understand, here's the configuration that can cause problems:
you are using an exchange server to connect your email/calendar/notes/tasks...
You use a PC (or VM PC) for some/most of your exchange/outlook activities
You may or may not have MS Office 2011 (Mac) installed.
You have one or more Apple devices connected to your exchange account (iPhone, iPad, any Mac)
After installing Mountain lion, you start noticing events being magically duplicated every few minutes in your outlook draft folder. If you delete an event, another one takes its place.
HERE IS THE FIX:
Short answer: Sync all calendars on all devices
On the apple side (OSX, IOS) you MUST turn on calendar sync in all the exchange accounts on all your devices. I thought I had, then discovered that my MS Office Outlook on my Mac was missing that sync. It doesn't seem to matter which apple device is missing the sync, it only takes one of them. Once you set calendar sync to "on" for all the apple devices that access that calendar, just like magic, the phantom multi event creation stops.
You should check all MS products on the OSX/IOS devices AND all apple devices that allow syncing. I haven't turned on notes sync through the cloud, so that isn't one of the items that cause problems.
If you do this and the multi still appears, you missed something on one of your apple devices.
Sweet!

Exchange calendar not sync on 3.1 (iPhone 2G)

Hi,
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 have the same problem since IOS 8.0.2 on an IPHONE 5 , my Exchange account updates fine on Email, as do other Email services. But the Calendar does not, I've also tried Push or Fetch but it does not seem to matter. Gmail Calendar does not have the same problem and updates fine.
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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.
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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.

Error while integrating Exchange Calendar with SharePoint Calendar Overlay

Hello All, I'm trying to integrate Exchange Calendar with SharePoint Calendar using Overlay option. I have added root certificate in my central admin, but it still show an error Could
not establish trust relationship for the SSL/TLS secure channel with authority.''
Any idea what i'm missing?
Thanks.

Hi Manish,
As I tested, please perform the steps below and test the issue again:
1.Log in to Exchange server with admin account.
2.Run mmc to open Console, click File > Add/Remove Snap-in, locate Certificates to add > Computer account > local computer.
3.Then you will see Certificates, locate your Exchange certificate and right-click it > All task > Export, leave settings as default and export it to a file.
4.Then go to SharePoint Central Administration > Security > Manage Trusts > add a new trust relationship with this certificate.
5.Note If you have multiple web-frontend servers, repeat these steps on each web-frontend server.
Regards,
Rebecca Tu
TechNet Community Support

How can I group Exchange calendars to publish as 1 on the net.

I have been given the task to figure out how to combine multiple exchange accounts into 1 viewable calender that I can publish from iCal.
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Export the contacts with Outlook on your PC at work to be imported by a supported address book application on the computer you will be syncing your iPad with.

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I went to the Genius bar where they updated the firmware and installed a module to increase the timeout delay for syncs.
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The answer may be somewhere else, but there are too many post to get through to find the answer.
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Yeah, it's a real pain.
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Hi!
I can see my own Exchange calendar just fine with iCal 4 from the corporate Exchange server. However, colleagues have also shared their Exchange calendars with me - which I can see just fine on Webmail / Exchange 2007, but I would also like to view these shared calendars in iCal.
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Hi guys,
"googling" I found this applescript:
tell application "iCal"
set color of calendar "Calendar" to choose color default color {0, 0, 0}
end tell
Waiting for an Apple fix, you can use this. It's wok like a charm!

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Gapam wrote:
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After upgrading to Yosemite, my Exchange calendar no longer syncs to iCal (the Apple calendar). Help?

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I have a personal email calendar kept on Outlook, I also have an Exchange calender on outlook. I want to sync both calendars with my Iphone 5 /6.1.2 but ITunes only sees the exchange calendar. How can I get Itunes to see both calendars

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Hi,
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If you hit a snag talk back to me.
Cheers.

Ipad - how to push Exchange calendar events to iCloud account? MobileIron is used to get Exchange data -- is there an app to push the ipad version of the events to iCloud?

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Missing Exchange calendar appts

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