Consider the following scenario in a Microsoft Exchange Server 2010 environment:

  • You have an Exchange Web Services (EWS) application that calls the GetStreamingEvents operation to request notifications from a server that is running Exchange Server 2010 and has the Client Access server (CAS) role installed.

  • The request times out.

In this scenario, the EWS application crashes.


The EWS managed API sends back a compressed stream to the EWS application when the request of the GetStreamingEvents operation times out. However, the EWS application cannot handle the compressed stream and crashes when it tries to parse the stream.


To resolve this issue, install the following update rollup:

2661854 Description of Update Rollup 2 for Exchange Server 2010 Service Pack 2


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

More Information

For more information about the GetStreamingEvents operation, visit the following Microsoft website:

General information about the GetStreamingEvents operation

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