Article ID: 2814251 - View products that this article applies to.
Assume that Domain Name System (DNS)-based automatic discovery is the only automatic discovery method that is deployed in a Microsoft Lync Server 2013 environment. In this situation, Lync 2013 clients do not discover the Exchange Web Service (EWS) servers.
To resolve this issue, install the following cumulative update:
(http://support.microsoft.com/kb/2812461/ )Description of the Lync 2013 updates: February 2013
To work around this issue, use one of the following methods: