IPhone 4 OS 4.3.3 Exchange 2003 Calendar issue

I have a user that is reporting the calendar entries on her iPhone (iPhone 4 - iOS 4.3.3) randomly disappears and reappears without any changes being made to the device. The email and contact portion of the device seems to be working fine. User took the iPhone to an Apple store and after some troubleshooting, they replaced the phone. This did not resolve the issue. The Apple tech said it was an issue with the Exchange Server. The user’s account was working fine for months. I disabled and re-enabled the user’s Web Services in Active Directory, no luck.
Why would the calendar be the only service being affected and how do I fix this?

No solution but just want to chime in that I'm encountering similar issues. Updated to 4.3.3 and I can no longer sync my work calendar, Exchange 2003. Connecting to the calendar works but only my sub calendars are recognized. My main work calendar isn't displayed. Various attempts to fix this have triggered a message that server identity cannot be verified. MuSt HaVe ExChAnGe SyNc... Please help.
restored, deleted account and reconnected. Apple says it's an Exchange issue. But I seem to be one of the few that are encountering the issue. Co-workers with lower versions do not have a problem syncing with exchange. Awh...progress

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The errors i get are not being able to verify: "Unable to verify account information." This used to happen before but when i chose to save settings, it would usually work after a while. But this time, with the iPhone 5, i kept getting "Cannot Get Mail" "The connection to the server failed".
I did this with a restore from back up, and a wiped phone, same results. My colleague with a fresh out of the box phone with no previous IOS backups, also has the same errors.
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Hi Guys,
I got exchange mail working. It seems issue is around "Push". I enabled "push", account verified & all worked well. After that I disabled push (I do not want it & to save mobile data use).
By googling, I found many have got it up & apple may fix it in it next iOS udpate.
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Hello,
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You know, yesterday I deleted the entire Exchange account, rebooted, added it -- nothing... then I deleted it again, rebooted again, etc... after about the 3rd time of doing this and allowing the Internet Accounts to automatically discover the account, it started working again.
You might want to give it the brute-force-angry-uninstall-and-reboot-multiple-times-while-shaking-angry-fists -and-cursing routine and see if that helps you!

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if a contact is created in Exchange (via Outlook or OWA) it will sync into the iPhone flawlessly. But if it is created on the iPhone, it WILL NOT go into Exchange. I sync to my PC; I make sure enough time has passed for a iPhone sync-still DOES NOT WORK.
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This sounds very much like the sync is set to the wrong account when you have more than one email account you must set the correct account to be the one to sync to.... in settings mail contacts and calendars check to see which is the default account... and ensure the exchange one is the default account if that is what you want to sync with ref contacts. Also do this in the calendars section at the bottom default calendar. i have this a lot with my directors they add entries into the iphone calendar and not the exchnage caledar and wonder why they are not syncing !!!! you can also see this in calendars itself their is a tab in the top left corner showning which calendars are being used, also each calendar entry will tell you which calendar it is using

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I currently have a MS SBS Exchange Server that is running Exchange 2003.
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Well... It looks like our spam/virus filter is still transferring mail to the old address, and this seems to be a problem. The problem was isolated after redirecting the port rules to forward port 25 directly to the new Exchange Server instead of the
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Exchange 2003 Provisioning issue

Hi All,
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Hi,
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Regards,
Madhu

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Hi,
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TechNet Community Support

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Hi,
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Still the same, no request from end user.
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TS3999 iPhone 5 v 7.0.4 and icloud calendar issue

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You'll need to contact the previous owner to get them to remove the account.
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Hi,
Got Mail for Exchange installed and find that my all-day-events/memos in my PC Outlook are copied to my Nokia E65 as 00:00-23:59 meetings.
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Regards // OM

Aww… I started a thread in another part of this forum about this issue. Did not see this thread. Sorry…
I have the same problem, and I find it annoying. What I’m trying right now is actually to evaluate RoadSync, which don’t have this problem. With RoadSync, an all day event in Outlook will show up as a memo on the phone.
RoadSync also integrates nicely with the built in mail software on the phone (i.e. it is not “stand alone”, as for example ProfiMail is).But so far, I don’t think is so much value added with RoadSync that I can justify $50 for it.
Message Edited by spritz on 27-Mar-2009 09:05 AM

IPhone 3G won't sync calendar with Exchange 2003

Hi - can't see this exact problem elsewhere hence the post...
I have iPhone 3G syncing with OWA from Exchange 2003 just fine with mail and contacts. Calendar is totally blank though. If I create a new appointment on iPhone then it shows up in Exchange - great! If I do it the other way round then I get nothing on iPhone - unless I invite myself in which case it does! But then if I delete the email invitation then the entry disappears. I could live with that (just about) but not but being able to sync my calendar history is a big problem for me.
By the way I can't sync my calendar history via iTunes to Outlook because the sync component crashes!
Can anyone shed any light?

Hi man, I got the same problem with my iPhone, but it has been solved..
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Second, You sould need to create a new PST file whit the Outlook Version 2003 or 2007, the file format must be on Unicode Format, no Outlook (97-2000) format, with this file format the import of calendar doesn't gonna be work.
Third, You now have a PST whit Outlook 2003 or 2007 Version, you need to manually put your events on the calendar, Why? Cause if you just move it on the new calendar it gonna create and old instance of the event not a new instance, That's why iTunes doesn´t sync the calendar.
I done all these and actually I can sync the calendar with my iphone.

IPhone 4S IOS5 problems sync Calendar with Exchange 2003

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Hi man, I got the same problem with my iPhone, but it has been solved..
First, You need the Outlook 2003 or 2007 only, if you have a earlier version of this it isn't work.
Second, You sould need to create a new PST file whit the Outlook Version 2003 or 2007, the file format must be on Unicode Format, no Outlook (97-2000) format, with this file format the import of calendar doesn't gonna be work.
Third, You now have a PST whit Outlook 2003 or 2007 Version, you need to manually put your events on the calendar, Why? Cause if you just move it on the new calendar it gonna create and old instance of the event not a new instance, That's why iTunes doesn´t sync the calendar.
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I had 3 users show up with iPhone 4s. 2 of the 3 synced fine against Exchange 2003. The third would attempt to sync but eventually time out and get a server connection failed error after adding the account. All three users were previously syncing fine with iPhone 3GS phones against the same Exchange 2003 setup.
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Hello,
I agree with Rajith's suggestion.
Additional article for your reference.
http://technet.microsoft.com/en-us/library/bb310763(v=exchg.141).aspx
Cara Chen
TechNet Community Support

IPhone 4 OS 4.3.3 Exchange 2003 Calendar issue

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