I have a working KMS 1.1 server installed on Windows Server 2003. We are thinking of deploying Windows Server 2008 R2 hosts. Is KMS 1.1 for w2k3 able to activate Windows Server 2008 R2 hosts? I cannot find any instructions for updating KMS 1.1 or even if it will activate R2 hosts.

See here: An update is available that installs Key Management Service (KMS) 1.2 for Windows Server 2003 Service Pack 2 (SP2) and for later versions of Windows Server 2003 This update installs Key Management Service (KMS) 1.2 for Windows Server 2003 Service Pack 2 (SP2) and for later versions of Windows Server 2003. KMS 1.2 provides support for the following KMS client installations: Windows Server 2008 R2 Windows Server 2008 and Windows Server 2008 Service Pack 2 (SP2) Windows 7 Windows Vista and Windows Vista Service Pack 2 (SP2) More information: Volume Activation Deployment Guide for Windows 7 and Windows Server 2008 R2 I hope this is helpful for you. Certifications: MCSA 2003|MCSE 2003|MCTS|

Thanks for the information. I'm not sure how I missed that.