The Microsoft Windows Communication Foundation (WCF) channel for IBM WebSphere MQ that is included with Microsoft Host Integration Server 2010 uses an incorrect MSGTYPE descriptor of Datagram during a synchronous call or when a reply queue is used.
Cumulative update information
The fix that resolves this problem is included in cumulative update package 7 for Host Integration Server 2010. For more information about how to obtain the cumulative update package, see Cumulative update package 7 for Host Integration Server 2010.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
After this update is applied, the WCF channel for WebSphere MQ changes the MSGTYPE descriptor to Request during a synchronous call or when a reply queue is used.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.