We've been having loads of issues with Calendars recently and I've finally got time to investigate. First thing Ive noticed is that you can schedule an apponitment years in the future and some occurences exist indefinately (I got as far as 2028 before getting RSI). This affects all mailboxes not just resource. Any ideas how I can start troubleshooting this issue? Below are the calendar settings for a typical user AutomateProcessing : AutoUpdate AllowConflicts : False BookingWindowInDays : 365 MaximumDurationInMinutes : 1440 AllowRecurringMeetings : True EnforceSchedulingHorizon : True ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 ForwardRequestsToDelegates : True DeleteAttachments : True DeleteComments : True RemovePrivateProperty : True DeleteSubject : True DisableReminders : True AddOrganizerToSubject : True DeleteNonCalendarItems : True TentativePendingApproval : True EnableResponseDetails : True OrganizerInfo : True ResourceDelegates : {} RequestOutOfPolicy : AllRequestOutOfPolicy : False BookInPolicy : AllBookInPolicy : True RequestInPolicy : AllRequestInPolicy : False AddAdditionalResponse : False AdditionalResponse : RemoveOldMeetingMessages : True AddNewRequestsTentatively : True ProcessExternalMeetingMessages : False DefaultReminderTime : 15 RemoveForwardedMeetingNotifications : False Identity

FYI - Ive just tested MaximumDurationInMinutes (set to 1440) and scheduled a meeting for 2 days?

hi, the default max value of bookingWindowInDay is 1080. In your scenario, are you using pure Exchange 2007 or coexist with Exchange 2003?

Hi, Just Exchange 2007

Hi You can extend the "BookingWindowInDay" the default value is 365. it can be extand. so that the booking the resource will be possible more than the year Jeevananthan S

Hi, Thanks for the reply but I don't want to extend the bookings past a year, I want to restrict the creation of recurring meetings to a year, currently we have meetings that re-occur every week for 25+ years. Thank you, Neil

Hi neilthomas, I would like to confirm some information first, 1. Are you sure the issue occurs on all of users? 2. Given from your log, It’s obviously a normal user’s mailbox but a resource mailbox. Please make attention of “AutomateProcessing”. 3. On the client, please make sure the Region and Time is correct. It’s also affect the result.

Hi, thanks for the reply. 1. Almost certain it applies to all mailboxes, Resource or User. It's the case for all resource mailboxes and all the users I've asked to test, and I've randomly checked recurring meetings in user calendars and its the same for all. 2. Again, pretty sure it happens whether its a resource or user mailbox and it doesn't matter whether AutomateProcessing is set to None, Autoupdate, no one is set to autoaccept (apart from meeting rooms). 3. All our clients are set to the correct time zone and get there time from an NTP server. Thanks again, Neil

Hi again, Has anyone got any suggestion as to how to progress this issue? Am I missing something really simple?

Hello Neil, As per the thread it appears that you do not want that any user should be able to create a recurring meeting which lasts for more than an year, is my understanding correct? Was it working prior to applying SP3 or has it never worked ?