I am experiencing a similar problem with a client of mine who is using Microsoft's Cloud-based Exchange server, Office 365. I suspect the Office 365 server is an Exchange 2010 server, similar to your environment. Check out my tests below which I think define when the day shifting happens.
I see that you applied SP2 to your Exchange 2010 environment, but have you also applied Update Rollup 1? See this article: http://support.microsoft.com/kb/2563324. It would be interesting to know whether that rollup resolves your problem.
I have done some pretty extensive testing and have posted in the Office 365 Support Forum (http://community.office365.com/en-us/f/146/p/53396/192332.aspx#192332) Here is a summary of my testing.
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I am having the exact same problem described by Jim Edmonds and jkwmail (http://community.office365.com/en-us/f/176/p/19921/93304.aspx#93304) with one of my clients who is not very happy about this or our inability to resolve the problem. Here is what I am experiencing:
When an appointment in Office 365 spans multiple days, the appointment gets converted to an All Day Event and moved forward one day on an iPhone ActiveSync client.
I have completed the following troubleshooting:
1 - Using my GMail Account and my work email account on MS Exchange 2007 SP 2 Server I created separate single day appointments in the morning from each account spanning two hours and invited my client who is using MS Outlook 2010 and Office 365.
Result: The appointments show the correct date and time on my Outlook, MS Exchange 2007 SP 2 OWA, and iPhone as well as my client's Outlook, Office 365 webmail, and iPhone.
2 - Using my GMail Account and my work email account on MS Exchange 2007 SP 2 Server I created separate single day appointments in the afternoon from each account spanning two hours and invited my client who is using MS Outlook 2010 and Office 365.
Result: The appointments show the correct date and time on my Outlook, MS Exchange 2007 SP 2 OWA, and iPhone as well as my client's Outlook, Office 365 webmail, and iPhone.
3 - Using my GMail Account and my work email account on MS Exchange 2007 SP 2 Server I created separate multi-day appointments from Friday at 5 PM to Monday at 8 AM from each account and invited my client who is using MS Outlook 2010 and Office 365.
Result: The appointments show the correct date and time on my Outlook, MS Exchange 2007 SP 2 OWA, and iPhone as well as my client's Outlook and Office 365 webmail. However, on my client's iPhone, the time on the appointments had changed to an all day event and the start date was shifted one day forward, Saturday, and the end date was Monday unless the appointment end time was after the appointment start time in which case it created an All Day Event on Tuesday as well. For Example: If the appointment was from 8 AM Friday Morning to 8 AM Monday Morning, the iPhone would show an All Day Event on Saturday, Sunday, and Monday. If the appointment was from 8 AM Friday Morning to 8:30 AM Monday Morning, the iPhone would show an All Day Event on Saturday, Sunday, Monday, and Tuesday. If the appointment was from 8 AM Friday Morning to 7:30 AM Monday Morning, the iPhone would show an All Day Event on Saturday, Sunday, and Monday. This was also true for appointments starting on Friday at 5 PM and ending on Monday at 5 PM, starting on Friday at 5 PM and ending on Monday at 5:30 PM, and starting on Friday at 5 PM and ending on Monday at 4:30 PM as in the above AM examples.
*** Again I would like to note that on my iPhone which is connected to my company's MS Exchange 2007 SP 2 server, the multi-day appointment shows up correctly with correct start and end times and is not converted to an All Day Event. ***
It would seem this is a problem with ActiveSync on Office 365 and iOS devices. What is particularly frustrating is that this exact problem is identified in KB 2563324 (http://support.microsoft.com/kb/2563324) Issue 1.6 - "An appointment is longer than 24 hours is changed to a multi-day All Day Event" which states: "To resolve this issue, install Update Rollup 1 for Exchange Server 2010 Service Pack 2 (SP2)." Since this is a cloud based service, we do not have the ability to either see what the current version of the Exchange service we are connected to is or update the service with this patch level.
4 - I performed the above three tests with my client creating the events in MS Outlook 2010 and inviting my work account on the MS Exchange 2007 SP 2 Server and got the exact same results.
5 - My client's iPhone is running iOS 4.3 and my iPhone is running iOS 5.1.0. In order to test this without going through the update process on my client's iPhone, I set up his Office 365 account on my iPhone and performed the tests in numbers 1-4 from above, viewing the results on my iPhone, and got the exact same results.
6 - Today, I tried this with a different Office 365 account, performed the multi-day test in number 3 from above and got the exact same results.
7 - Today I also upgraded my iPhone to iOS 5.1.1, performed the multi-day test in number 3 from above and got the exact same results.
8 - I have confirmed that all time zones are set correctly. I have checked the iPhone, OWA, Office 365 Webmail, etc.
I believe the problem in my case is with the Office 365 environment and not the iOS device. However, trying to get support from these large companies seems to be very difficult?
Does anyone from Apple know if this is an iOS bug or a problem with Exchange 2010/Office 365?
Thanks...
Jp
