A user is displayed two times in a membership list of a Lync Server 2010, Group Chat channel

Applies to: Lync Server 2010, Group Chat

Symptoms


A user is displayed two times in a membership list of a Microsoft Lync Server 2010, Group Chat channel. This issue occurs when the following conditions are true: 
  • A child domain or a child group is added under the Scope tab in Group Chat Administration Tool.
  • The user who is displayed two times in the membership list is a member of both the parent and child group, or the parent and child domain.

Cause


This issue occurs because a procGetExplicitRoleList stored procedure is mishandled. The stored procedure is used to pull the membership list for a specific chat room.

Resolution


To resolve this issue, install the following cumulative update:
2514984 Description of the update for Lync Server 2010 Group Chat: November 2011