For users can't share desktop in a Lync meeting in Microsoft Lync Server 2013, this update fixes the startup sequence to initialize McuInfra's CCCPAdapter and LSHealthNotifier components only after Application Sharing Multipoint Control Unit (ASMCU) service is completely ready to take new add conference requests. After you apply this update, when the Focus wants to enable a meeting and bootstrap ASMCU, Multipoint Control Unit (MCU) won't be picked by MCU Factory as a healthy ASMCU until it receives a "health" notification from the LSHealthNotifier component.
To learn more information about the Conferencing Data Flow, please refer to Core (Focus, Focus Factory, and Conferencing Server Factory).
How to get this update
To get this update, install the July 2018 cumulative update 5.0.8308.1001 for Lync Server 2013, Conferencing Server.