Fixes an issue in which a user cannot join a Lync 2010 conference until the meeting join page is refreshed. This issue occurs after update 2500441 is installed in a Lync Server 2010 environment.

Describes the cumulative update for Lync Server 2010, Unified Communications Managed API 3.0 Runtime that is dated July 2011.

Fixes an issue in which a DTMF-based IVR application crashes when a user barges-in multiple times with invalid DTMF digits or barges-in to request help. This issue occurs if the application is developed by using Lync Server 2010, UCMA 3.0 Workflow APIs.