Microsoft has released the following updates for Lync 2010: Lync 2010 Hotfix KB 2701664 (64 bit), Lync 2010 Hotfix KB 2701664 (32 bit), Lync 2010 Attendee Hotfix KB 2693283 (User level install), and Lync 2010 Group Chat Hotfix KB 2701665

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