Lync Group Chat modulerne er også blevet opdateret, herunder server, client & admin tool.

Lync Server 2010 Group Chat Hotfix KB 2514984

Download:
http://www.microsoft.com/download/en/details.aspx?id=5855

TechNet:
http://support.microsoft.com/kb/2514984

Lync 2010 Group Chat Admin Tool Hotfix KB 2636063

Download:
http://www.microsoft.com/download/en/details.aspx?id=22675

TechNet:
http://support.microsoft.com/kb/2636063

Lync 2010 Group Chat Hotfix KB 2636065

Download:
http://www.microsoft.com/download/en/details.aspx?id=11804

TechNet:
http://support.microsoft.com/kb/2636065