Hi all!! I have to modify the"Calendar Work Week" in all of my employees, but I don't want to make this changes one by one by OWA client. Is there any way of making this change at a server level? Thanks! Edgee

Hi Even if you asked a long time ago. Here you are with an answer which runs at least on Exchange 2010. You can modify the working hours by typing in the following commando in the exchange powershell: Set-MailboxCalendarConfiguration -Identity Object.Alias -WorkingHoursStartTime 00:00:00 Set-MailboxCalendarConfiguration -Identity Object.Alias -WorkingHoursEndTime 00:00:00 You'll be able to paste this two lines of code in a Shell-Batch-File and then just apply it for the items you wish. Hope it helps even if its a little bit outdated... Alex