WMI diagnostic

FlexRAID relies on WMI for a number of its functions.
You might be referred to this article to diagnose WMI related issue with your system.

  1. Download “The WMI Diagnosis Utility” here: http://www.microsoft.com/en-us/download/details.aspx?id=7684 or here for version 2.1
  2. Run the downloaded file and you will be prompted to specify a directory where it needs to be extracted (let’s use C:\wmidiag for this scenario)
  3. You must be logged in as administrator to successfully run the script
  4. In a DOS prompt (with admin privileges) change to C:\wmidiag and execute CSCRIPT WMIDiag.vbs
  5. Once completed, a text report will open. If it does not, navigate to C:\Users\<REPLACE WITH YOUR USER NAME>\AppData\Local\Temp
  6. An error in the report does not necessarily mean that FlexRAID is impacted. In most cases, restarting the system will fix WMI issues as they relate to FlexRAID. However, if you happen to have severe issues, then read the report and attempt to fix the errors reported. Feel free to post on the forum for help analyzing the report.
  7. You can additionally refer to this article for further details on The WMI Diagnosis Utility

Quoted for reference:

WMIDIAG can be run from Windows Explorer, or from the command line. Each time it runs, the WMI Diagnosis Tool creates the following three files in the %TEMP% directory:

  • .LOG file containing all the WMI Diagnosis Tool activity as well as a WMI report at the end
  • .TXT file containing the WMI Diagnosis Tool report
  • .CSV file containing statistics that can be used to measure trends and issues

When the WMI Diagnosis Tool terminates, the ERRORLEVEL environment variable is set to one of the following values:


  • WSH has a script execution timeout setup (in machine or system environment)
  • Machine reports suspicious improper shutdowns
  • User Account Control (UAC) status is reported (Vista and above)
  • Local account token filter policy is reported (Vista and above)
  • Unexpected binaries in the WBEM folder
  • The Windows Firewall is enabled
  • Some WMI service installed in the machine are dependent on the WMI service (i.e. “SMS Agent)
  • WMI ADAP has a status different than ‘running’
  • Some WMI namespaces require a packet privacy encryption for a successful connection
  • Some WMI permanent subscriptions or timer instructions are configured
  • Some information about registry key configurations for DCOM and/or WMI was reported


  • System32 or WBEM folders are not in the PATH
  • WMI system file(s)\ repository is/are missing
  • WMI repository is inconsistent (XP SP2, 2003 SP1 and above)
  • DCOM is disabled
  • WMI service is disabled
  • The RPCSS and/or the WMI service(s) cannot be started
  • WMI DCOM setup issues
  • Expected default trustee or ACE has been removed from a DCOM or WMI security descriptor
  • The ADAP status is not available
  • One or more WMI connections failed
  • Some GET operations\WMI class MOF representations\WMI qualifier retrieval operations failed
  • Some critical WMI ENUMERATION operations\WMI EXECQUERY\WMI GET operations failed
  • Some WRITE operations in the WMI repository\PUT\DELETE operations failed
  • One of the queries of the event log entries for DCOM, WMI and WMIADAPTER failed
  • Some critical registry key configurations for DCOM and/or WMI were reported


  • System32 or WBEM folders are further in the PATH string than the maximum system length
  • System drive and/or Drive type reporting are skipped
  • DCOM has an incorrect default authentication level (other than ‘Connect’)
  • DCOM has an incorrect default impersonation level (other than ‘Identify’)
  • WMI service has an invalid host setup
  • WMI service (SCM configuration) has an invalid registry configuration
  • Some WMI components have a DCOM registration issue
  • WMI COM ProgID cannot be instantiated
  • Some WMI providers have a DCOM registration issue
  • Some dynamic WMI classes have a registration issue
  • Some WMI providers are registered in WMI but their registration lacks a CLSID
  • Some WMI providers have a correct CIM/DCOM registration but the corresponding binary file cannot be found
  • A new ACE or Trustee with a denied access has been modified to a default trustee of a DCOM or WMI security descriptor
  • An invalid ACE has been found for an actual DCOM or WMI security descriptor
  • WMI ADAP never ran on the examined system
  • Some WMI non-critical ENUMERATION operations failed\skipped
  • Some WMI non-critical EXECQUERY operations failed\skipped
  • Some non-critical WMI GET VALUE operations failed
  • Some WMI GET VALUE operations were skipped (because of an issue with the WMI provider)
  • The WRITE operations in the WMI repository were not completed
  • The information collection for the DCOM, WMI and WMIADAPTER event log entries was skipped
  • New event log entries for DCOM, WMI and WMIADAPTER were created during the WMI Diagnosis Tool execution
  • Some non-critical registry key configurations for DCOM and/or WMI were reported

3 = Command Line Parameter errors

4 = User Declined (Clicked the Cancel button when getting a consent prompt)

  • WMIDiag is started on an unsupported build or OS version
  • WMIDiag has no Administrative privileges
  • WMIDiag is started in Wow environment (64-bit systems only)
Be Sociable, Share!


No comments yet.

Leave a Reply