A Lync 2010 Group Chat client crashes when you start two instances at the same time

Applies to: Lync 2010 Group Chat

Symptoms


When you start two instances of a Microsoft Lync 2010 Group Chat client at the same time, a race condition occurs. Additionally, this causes the Lync 2010 Group Chat client to crash.

Resolution


To resolve this issue, install the following cumulative update:
2636065 Description of the cumulative update for Lync 2010 Group Chat client: November 2011