I am using outlook 2003 sp/2 and exchange 2007 sp1. Iopen a shared calendar (ofuser Aaccount), afterbrowsing the clalendar for a littlewhile I get the message "Microsoft office Outlook - Can't open this item. There is not enough memory available to perform the operation". Thenmy outllook muck up and I need to restart my outlook. Other users also having the same problem try to open the same shaed calendar. I have checked the size of the calendar is about 550K. So, I believed this is the problem with the shared calendar. But user A does not have problem in modifying his own calendar.Can some one please advice how to fix this issue?ThanksAwong

Hi,Whether all the clients were using Outlook 2003? Did you try this issue inthe Outlook 2007 client?ThanksAllen

We are having exactly the same issue. All Outlook 2003 clients on Exchange 2007.Thanks,Scott