Hi, We have 3 offices (one in Europe, one in the east coast, and one in the west coast). Each of the offices has its own Exchange server database (so that mailboxes for the different staff members are stored in the Exchange DB in that particular office's server/site). We have an Exchange 2010 server in our west coast office, and Exchange 2007 at the European and East coast offices. The problem we are seeing is that staff members in the east coast will set up appointments that make into the calendars of the staff members out there no problem but if there is a change to the meeting time, the meetings are not getting updated on the invittees calendars leading to a lot of confusion. Users also log into their accounts via the web client and the meetings do not have the updated time in there either... This is stomping me because the staff members are all in the same site so it is not a problem with inter-site synching... Has anyone experienced this? Does anyone have any tips or suggestions on how to fix it??? Any help is much appreciated! Thanks in advance, AllieTS_IT

If they're proposing meetings or changing appointments, the changes are sent to attendees by messages. To properly diagnose this issue, find out the exact sequence of steps the users are performing to make this fail. It's likely that they're doing something in a nonstandard fashion.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi Ed, Thanks for the quick response! I will email the users but probably won't hear back until after the holiday! I will let you know what I find out! Thanks, AllieTS_IT

Hi Ts_IT, Hope more information from you, then we could narrow down the issue. Any mobile devices used to connect to the mailbox, it also could cause the calendar issue. Reards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Gavin, Yes, Android and iphones do synch calendars with Exchange. We have the same type of setup in our California office (which is a bigger office and there are more mobile devices connecting to Exchange and yet no one has seem the same problem)... I am just waiting for a message from one of the users that is experiencing the problem with the exact steps. AllieTS_IT

Ok. i got a reply from one of the users that made a change to a meeting and the meeting change did not show up on another user's calendar. Steps to create meeting: She clicked on New Meeting Request, gave it a subject, clicked on Scheduling assistant, invited other staff members, set up recurrence interval and clicked on send Invitation. To make a date/time change, she reopened the series, clicked on the recurrance interval, changed the date/time and sent out an updated invitation. The person whose calendar did not get changed, opened up the new invitation and clicked on accept. Even after that,the meeting still shows up with the old date on that person's calendar (even in OWA). This person can't move the meeting since he is not the organizer (which is corract). The second time this happened, was when the subject of the meeting got changed (words were added) by the organizer. The invitees get an updated invitation, click on accept but the new changes are actually never made in the invitee's calendars.. I was on a remote session with the user and watched her create meetings and nothing called my attention in terms of it being incorrect. I also got some screenshots that the user took when she was making a change to a meeting and it all seems like she did it the right way... AllieTS_IT

Hi TS_IT, Could you please make some tests by yourself, sometimes the client maybe missed some operations, and they did not realize it. Such as, 1. accept the meeting update through OWA 2. use other mailbox make some tests 3. remove the mobile devices and then make some tests If the issue still exists, please enalbe the ouglook troubleshooting log. I would suggest you could open a ticket from MS, because the logs need some MS internal tool to analyze it. Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

That's going to be a very hard thing to diagnose or solve here. Some advice I have for you is to record the version of Outlook everyone is using, whether there are multiple clients attached to the mailbox simultaneously, and ensure that there are no mobile devices involved in the picture. I've seen numerous problems with calendaring when users have a variety of clients (especially old versions of Macs) and various mobile devices. In order to produce a good problem statement, I encourage you to try to narrow down the issue to specific Outlook or other client versions and the specific versions of any mobile devices that might be connected to the mailbox.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi TS_IT, Any update for your issue? Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Gavin and Ed, The issue is still happening... However I did narrow it down to 3 users (maybe others are not complaining about it). Two of them are using Outlook 2010 and one is using Outlook 2007. All 3 have Droid phones and use corporate synch to get emails on the phone. One thing is peculiar though. When an appointment gets changed by a user, it does not show up in the other attendees calendars as changed even though they accept the new invite (even when using OWA instead of the Outlook client). Let me know if you guys have any other ideas... Thanks again, Allie TS_IT

Hi TS_IT How about to move the mailbox that have calendar item update issue to other database, and then make some tests. Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Gavin, the users having the problem were in a different database before and the problem was present then too. AllieTS_IT

Hi TS_IT, Could you please make a test after removing the mobile devices? Or, how about other mailboxes, If other mailboxes have no the issue, I would create a new mailbox and move the items into the new mailbox for the users. Please also update the mobile devices and exchange 2007 with latest update. What do you mean "When an appointment gets changed by a user, it does not show up in the other attendees calendars as changed even though they accept the new invite ". If the organizer want to update the appointment, a update message would need to send to all the attendees, and all the attendees accept the update message, but without updaing the item in the calendar, right? In my opinion, it maybe caused the Mobile Devices, if so, need to retrieve more log, please open a ticket from MS to cnfirm it. Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Ts_IT, Any update for your issue? Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.