XCLN: Attempting to Open Public Folder Might Return Error

• Microsoft Exchange Server, version 4.0

SYMPTOMS

When you use the Microsoft Exchange client to open a Public Folder (PF) that has a special custom view that categorizes the folder content, the open attempt might return the following:

   Error: Unable to display folder

CAUSE

When a categorized view is added to a PF, the required columns are added to the folder table in the Microsoft Exchange Information Store (IS) to support this view. When we re-use this folder table, we assumed that all the columns needed are already present in the IS. However, if this same folder table is used but the sort criteria is different, the QueryRows call will not check to make sure the columns needed for the new sort criteria are present. It only checks that the columns needed for the categorization are present. So when QueryRows tries to create an index to the sorting columns, the IS database (JET) returns a JET_errColumnNotFound (this is translated as MAPI_E_CALL_FAILED).

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem was corrected in the latest Microsoft Exchange Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K