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

Topic Last Modified: 2010-07-15

Before you begin, you can use a text editor, such as Windows Notepad, to review all the Active Directory schema extensions that will be modified for Microsoft Communications Server 2010. Communications Server 2010 uses four schema files:

All .ldf files are installed during Schema preparation, regardless of whether you are migrating from a previous release or performing a clean installation. These schema files are installed in the sequence listed above and are located in the \Support\schema folder on the installation media.

The Communications Server 2010 schema extensions are replicated across all domains, which impacts network traffic. Run schema preparation at a time when network usage is low.

The schema preparation cmdlet (Install-CsAdServerSchema) must access the Schema Master, which requires that the remote registry service is running and that the remote registry key is enabled. If the remote registry service cannot be enabled on the Schema Master, you can run the cmdlet locally on the Schema Master. For details about registry remote access, see Microsoft Knowledge Base article 314837, "How to Manage Remote Access to the Registry," at http://go.microsoft.com/fwlink/?LinkId=125769.


Active Directory Service Interfaces Editor (ADSI Edit) is an Active Directory Domain Services (AD DS) administration tool that you can use to verify that schema preparation ran successfully.

ADSI Edit is installed by default when you install the AD DS role to make a server a domain controller. For Windows Server 2008 and Windows Server 2008 R2, ADSI Edit (adsiedit.msc) is included with the Remote Server Administration Tools (RSAT). You can also install RSAT on domain member servers or stand-alone servers. The RSAT package is copied to these servers by default when you install Windows, but it is not installed by default. You install individual tools by using Server Manager. ADSI Edit is included under Role Administration Tools, Active Directory Domain Services Tools, Active Directory Domain Controller Tools.

For Windows Server 2003, ADSI Edit is included with the Support Tools. The Support Tools are available from the Windows Server 2003 CD in the \SUPPORT\TOOLS folder, or you can download them from Windows Server 2003 Service Pack 2 32-bit Support Tools at http://go.microsoft.com/fwlink/?LinkId=125770. Instructions for installing the Support Tools from the product CD are available from Install Windows Support Tools at http://go.microsoft.com/fwlink/?LinkId=125771. Adsiedit.dll is automatically registered when you install the support tools. If, however, you copied the files to your computer, you must run the regsvr32 command to register the adsiedit.dll file before you can run the tool.

See Also