Windows Updates Requirements

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.


Topic Last Modified: 2016-12-01

The following operating system updates are prerequisites for deploying Office Communications Server 2007 R2:

  • 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

    This update must be installed before you install Office Communications Server 2007 R2 Administrative Tools in the following situations only:

    • On computers running Windows Vista, if you also install Remote Server Administration Tools (RSAT)

    • On computers running Windows Server 2008, if Active Directory Domain Services (AD DS) administrative tools are installed

  • Microsoft Knowledge Base article 953990, “AV at mscorwks!SetAsyncResultProperties,” at

    This update applies to Windows Server 2003 SP2 and Windows Server 2008.