[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-07-18

All Microsoft Communications Server 2010 servers must meet certain minimum operating system requirements. The first topic in this section describes the software and services that must be enabled or updated on Windows Server 2008. The second topic describes additional software that must be installed on Windows Server 2008 prior to deploying Communications Server 2010.

Communications Server 2010 is available only in a 64-bit edition, which requires 64-bit hardware and a 64-bit edition of Windows Server. A 32-bit edition of Communications Server 2010 is not available with this release. The exception is the Communications Server Planning Tool, which is available in a 32-bit edition.

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