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It takes a long time to expand a distribution list by using EWS in an Exchange Server 2010 environment

SYMPTOMS
In a Microsoft Exchange Server 2010 environment, it takes a long time to expand a distribution list by using Exchange Web Services (EWS). For example, it takes about 20 seconds to expand a distribution list by using EWS. However, you can use Outlook Web App (OWA) to expand the same distribution list instantly.
CAUSE
The issue occurs because Exchange Server 2010 uses the wrong ADSession query.
RESOLUTION
To resolve this issue, install the following update rollup:
2529939 Description of Update Rollup 3 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 use EWS to expand distribution lists, visit the following Microsoft website:
Properties

Article ID: 2482103 - Last Review: 04/06/2011 18:56:00 - Revision: 2.0

  • Microsoft Exchange Server 2010 Service Pack 1
  • kbqfe kbfix kbsurveynew kbexpertiseinter kbhotfixrollup KB2482103
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