- The Desktop Experience feature is not enabled on a Windows Server 2008 server, or on a Windows Server 2008 R2 server.
- You install the Microsoft Unified Communications Managed API (UCMA) Runtime on this server.
- You successfully install the Microsoft Exchange Server 2010 Unified Messaging server role on this server.
Note By default, the Microsoft Exchange Unified Messaging service is started after you install the Exchange Server 2010 Unified Messaging server role on a computer.
Article ID: 2514709 - Last Review: Jul 28, 2011 - Revision: 1