We have a problem with the Free/Busy information and the Availabillity service in Outlook 2007 after upgrading our Exchange 2003 Server to 2010. There is no information in the group scheduler in Outlook, except for your own calendar. (All calendars are shared and there is no problem to look at the contents to others if you open the calendar)
This worked, but we suddenly discovered that the information in the group scheduler was gone (and when we set up a meeting there is no information in the planning scheduler).
We are a little uncertain about this came as a result of an undocumented change on the server or if there is anything else that has caused this.
How to fix this?