I have had this issue ongoing for some time, and I can not figure out an answer. We have many users that have appointments in their calendars that are not always visible to all other users. Some can see all appointments, some only show random appointments. This has caused serious issues with booking users time for meetings and client visits. The appointments can be new, or even have been there for months. Sometimes deleting the shared calendar and re-adding it will work, but not always. My Management is extremely concerned with the lack of visibility, and the double-bookings that have been caused because of it. Our infrastructure is: * Exchange 2007 running on Win 2003 64bit (both CAL/Hub and Edge) * Outlook 2007 / 2010 running on Windows 7 (note: Issue occurred on Vista as well). Thanks for any help / advice, Chris

Hi, First let me clarify the issue with you. 1. You have share calendar to others, is that ture? Then what the permission that you have granted to others. 2. Do you try to find the appointment in the shared calendar? Then what is the mode of your outlook? Please try to use online mode and then check the issue again. 3. Does this issue occur to all the users? 4. Please try to follow the steps in the article below to check if you have cache the shared calendar. A shared folder is unexpectedly cached to the Offline Folder file in Outlook 2007 http://support.microsoft.com/kb/936247 Regards, Xiu

Xiu Zhang, Thank you for your suggestion, and I am confident that the information in the KB article will solve the issue. We were confident that it dealt with it being cached, but didn't see the obvious option. To answer your questions: 1. Everyone is by default set as "Reviewer" on the calendars. 2. Cached mode is enabled. 3. Not sure if it occurs to everyone, but a high percentage of users have complained of this issue. Again, Thank you. Chris