An application that is developed by using Exchange Server MAPI Client and CDO 1.2.1 crashes when the application accesses the Exchange Server 2010 message stores

You use Microsoft Exchange Server MAPI Client and Collaboration Data Objects (CDO) 1.2.1 to develop applications. You use these applications to access the content of message stores. However, when you use an application that uses a version before 6.5.8160.0 of Exchange Server MAPI Client and CDO 1.2.1 to access the Exchange Server 2010 message stores, a crash may occur with access violation exceptions.

To resolve this problem, download and install the following package from Microsoft Download Center:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.