Conferencing Announcement Service lost connection with the Microsoft Lync Server 2010 Front End. Front End=%1. Cause: This ...

Conferencing Announcement Service lost connection with the Microsoft Lync Server 2010 Front End.

Front End=%1.
Cause: This issue may occur due to network connectivity, DNS lookup failure, TCP failure or issues on the remote server.
Resolution:
Resolve network connectivity issues between Conferencing Announcement Service and the Microsoft Lync Server 2010 Front End.