I've 20 Room mailboxes in my EXCH 2k7 SP2 environment. ALL of them having -MaximumDurationInMinutes set to 1440mins. I need to set -MaximumDurationInMinutes to be unlimited. But as value of this Paramerter is Int32, how could i set this to be unlimited? Here is the settings for one of the Room Mailbox, [PS] C:\Windows\System32>get-MailboxCalendarSettings -Identity Cl-3490 |fl AutomateProcessing : AutoAccept AllowConflicts : False BookingWindowInDays : 365 MaximumDurationInMinutes : 1440 AllowRecurringMeetings : True EnforceSchedulingHorizon : True ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 get-content c:\users.txt | Set-MailboxCalendarSettings -MaximumDurationInMinutes ???????????? Kindly help!

try setting it to 0, but this could mean that one person completely book a resource completely.Thiyagu | MCTS/MCITP - Exchange 2007 | MCSE 2003[Messaging] | http://www.myExchangeWorld.com. This posting is provided "AS IS" with no warranties, and confers no rights.

do you mean others can't be schedule or book that Room again and that will book for that person forever? if so what would be the best possible workaround/solution to avoid that...

Hi Abhi28, As the value Type is Int32, you have to set it to MaxValue: 2,147,483,647(2^31-1, >4000years). Frank Wang 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.

Thanks Frank, thats sounds good!