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

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

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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.

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Cause

The issue occurs because Exchange Server 2010 uses the wrong ADSession query.

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Resolution

To resolve this issue, install the following update rollup:
2529939 Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1

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Status

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

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More Information

For more information about how to use EWS to expand distribution lists, visit the following Microsoft website:
How to use EWS to expand distribution lists

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Keywords: kbqfe, kbfix, kbsurveynew, kbexpertiseinter, kbhotfixrollup, kb

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Article Info
Article ID : 2482103
Revision : 1
Created on : 1/7/2017
Published on : 4/6/2011
Exists online : False
Views : 337