Display names of federated contacts do not appear in a Lync Server 2013 environment Content provided by Microsoft Applies to: Lync Server 2013 Select Product Version All Products Symptoms The display names of federated contacts do not appear in a Lync client after you configure federation in Microsoft Lync Server 2013.Note This issue occurs if the contacts are added to the contact list. Cause This issue occurs because the Unified Communication Web API (UCWA) does not call the ContactCard control. This control is required to display the names of federated contacts. Resolution To resolve this issue, install the cumulative update that is described in the following article in the Microsoft Knowledge Base:2835435 Description of the cumulative update 5.0.8308.420 for Lync Server 2013, Web Components: July 2013 References For more information about UCWA events, see the following TechNet website:UCWA Events Last Updated: Jul 1, 2013 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.