Article ID: 2913470 - View products that this article applies to.
Assume that you sign in to Microsoft Lync for Mac 2011. In this situation, your display name might be displayed as the Session Initiation Protocol (SIP) address.
This issue occurs because Lync for Mac 2011 cannot parse a SIP to a display name.
To resolve this issue, install the following cumulative update:
(http://support.microsoft.com/kb/2909662/ )Description of the Microsoft Lync for Mac 2011 14.0.7 update