No results returned when you use the ExpandGroup method in EWS to retrieve a list of members of a Dynamic Distribution Group in an Exchange Server 2010 environment

Symptoms

Consider the following scenario:
  • You create a Dynamic Distribution Group in a Microsoft Exchange Server 2010 environment.
  • Certain recipients in the organization match the criteria that are defined for the Dynamic Distribution Group.
  • You try to use the ExpandGroup method in Exchange Web Services (EWS) to retrieve the list of members of the Dynamic Distribution Group.
In this scenario, the list returns no results for the Dynamic Distribution Group.

Cause

This issue occurs because the ExchangeService.ExpandGroup method that EWS uses does not expand the Dynamic Distribution Group when it tries to determine the list of members.

Resolution

To resolve this issue, install the following update rollup:
2608646 Description of Update Rollup 6 for Exchange Server 2010 Service Pack 1

Status

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 how to create a Dynamic Distribution Group, visit the following Microsoft website:
For more information about how to view members of a Dynamic Distribution Group, visit the following Microsoft website:
For more information about the ExchangeService.ExpandGroup method, visit the following Microsoft website:

Properties

Article ID: 2579671 - Last Review: Oct 28, 2011 - Revision: 1

Microsoft Exchange Server 2010 Service Pack 1, Microsoft Exchange Server 2010 Standard, Microsoft Exchange Server 2010 Enterprise

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