The application-sharing service consumes excessive memory resources on a Microsoft Lync Server 2010 server. Therefore, one or more of the following issues occur:
The Lync Server 2010 server crashes.
Lync 2010 users are disconnected from a conference.
Lync 2010 users cannot create a conference.
Lync 2010 users cannot share applications.
Lync 2010 users experience issues with audio conferences and video conferences.
To resolve this issue, install the following cumulative update:
2575870 Description of the cumulative update for Lync Server 2010, Conferencing Server: July 2011