Product Version Download
Lync 2010 (64bit client) 4.0.7577.4378 2791382
Lync 2010 (32bit client) 4.0.7577.4378 2791382
Lync Server 2010, Group Chat 4.0.7577.4378 2803651
Lync Server 2010  4.0.7577.216 2493736