Operating System Updates
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
The following operating system updates are prerequisites for deploying Office Communications Server 2007 R2 on any server computer:
Microsoft Knowledge Base article 953582, "You may be unable to install a program that tries to register extensions under the IQueryForm registry entry in Windows Server 2008 or in Windows Vista," at https://go.microsoft.com/fwlink/?LinkId=131392. You must install this update before you install Office Communications Server 2007 R2 administrative snap-in. This update applies to Windows Server 2008 and Windows Vista.
Microsoft Knowledge Base article 953990, “AV at mscorwks!SetAsyncResultProperties,” at https://go.microsoft.com/fwlink/?LinkId=145380. This update applies to Windows Server 2003 SP2 and Windows Server 2008.