Windows Management Instrumentation cannot be accessed

[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: 2010-01-13

The Microsoft Exchange Analyzer Tool verifies whether the Windows Management Instrumentation (WMI) provider function is configured correctly on cluster nodes. The WMI provider must be configured correctly on all computers in the cluster so that Exchange Analyzer provides accurate reports about the Exchange environment. If the WMI provider is not configured correctly, you receive the following error message:

Exchange server: WMI cannot be accessed. Cannot connect to the Windows Management Instrumentation (WMI) repository on server Server_Name. This could be the result of a network or permissions problem.

To address this error, obtain the WMI Diagnosis Utility to troubleshoot WMI. To obtain the utility, see "The WMI Diagnosis Utility -- Version 2.0" ( The WMI Diagnosis Tool is a VBScript based-tool for testing, validating, and analyzing a WMI installation. Read the document "WMIDiag" that is included in the download package for specific directions about how to use the WMI Diagnosis Utility and how to correct the errors that may be found by the utility.