Topic Last Modified: 2011-01-27

The Active Directory Domain Services topologies supported by Microsoft Lync Server 2010 are as follows:

Lync Server does not support single-labeled domains. For example, a forest with a root domain named contoso.local is supported, but a root domain named local is not supported. For details, see Microsoft Knowledge Base article 300684, “Information about configuring Windows for domains with single-label DNS names,” at

For details about supported topologies and requirements, see Active Directory Domain Services Requirements, Support, and Topologies in the Planning documentation.