Active Directory Schema Extension Requires That Ldifde.exe be Installed

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]  

Topic Last Modified: 2007-06-19

Microsoft Exchange Server 2007 setup cannot continue because the local computer cannot update the Active Directory schema.

Microsoft Exchange setup requires that Ldifde.exe be installed on the local computer to make necessary extensions to the Active Directory schema.

To resolve this issue, install Ldifde.exe on the local computer and rerun Exchange Server 2007 setup or start Exchange Server 2007 setup from a domain controller.


When the Active Directory schema has been extended, Exchange 2007 server roles can be installed on the local computer without ldifde.exe being installed.

To install Ldifde.exe on the local computer

  1. Click Start, Run, and in the Open field run 'ServerManagerCmd -i RSAT-ADDS'