Topic Last Modified: 2011-05-17

Microsoft Lync Server 2010 is available only in a 64-bit edition, which requires 64-bit hardware and the 64-bit edition of the Windows Server operating system. Client computers are not required to have 64-bit hardware or software.

All server roles of Lync Server 2010 require one of the following operating systems:

• The 64-bit edition of Windows Server 2008 R2 Standard, the 64-bit edition of Windows Server 2008 R2 Enterprise, or the 64-bit edition of Windows Server 2008 R2 Datacenter
  
  
• The 64-bit edition of Windows Server 2008 SP2 Standard, the 64-bit edition of Windows Server 2008 SP2 Enterprise, or the 64-bit edition of Windows Server 2008 SP2 Datacenter