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Below you can find all builds and version of Microsoft Lync Server 2010 and 2013.
How to check Lync Server build number
Lync Server 2013
| Version | Cummulative Update | KB Article |
| 5.0.8308.0 | RTM | NA |
| 5.0.8308.29 | CU1 February 2013 | KB2781547 |
| 5.0.8308.420 | CU2 July 2013 | KB2819565 |
| 5.0.8308.556 | CU3 October 2013 | KB2809243 |
| 5.0.8308.577 | CU4 January 2014 | KB2809243 |
In the following link you can get the latest update for Lync Server 2013:
Lync Server 2010
| Version | Cummulative Update | KB Article |
| 4.0.7577.0 | RTM | NA |
| 4.0.7577.108 | CU1 January 2011 | KB2467775 |
| 4.0.7577.137 | CU2 April 2011 | KB2500442 |
| 4.0.7577.166 | CU3 July 2011 | KB2571546 |
| 4.0.7577.183 | CU4 November 2011 | KB2514980 |
| 4.0.7577.190 | CU5 February 2012 | KB2670352 |
| 4.0.7577.199 | CU6 June 2012 | KB2701585 |
| 4.0.7577.203 | CU7 October 2012 | KB2737915 |
| 4.0.7577.216 | CU8 March 2013 | KB2791381 |
| 4.0.7577.217 | CU8 July 2013 | KB2860700 |
| 4.0.7577.223 | CU9 October 2013 | KB2493736 |
| 4.0.7577.225 | CU10 January 2014 | KB2493736 |
In the following link you can get the latest update for Lync Server 2010:
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