Inventory Scan failure - Asset Scan Locked (or) WMI Connection Failed

Problem

You are unable to proceed with manual / scheduled Inventory Scanning and you get an error - "Asset Scan Locked" (or) "WMI Connection Failed", during the process.

Cause

You will encounter this error due to one or more of the following reasons:

1. Client machine is too slow due to reasons like high CPU/Memory utilization.
2. WMI is not configured properly.
3. WMI repository corrupted.

Resolution

Execute the below command in cmd as an administrator:

• For Windows XP
  • winmgmt /clearadap - Clears the WMI performance counter settings.
  • winmgmt /kill - Stops the WMI service.
  • winmgmt /unregserver - Unregister the WMI service.
  • winmgmt /regserver - Registers the WMI service.
  • winmgmt /resyncperf - Re-synchronizes performance counters.
• For Windows 2003 Server
  • wmiadap.exe /c - This command re-compiles all MOF files
  • wmiadap.exe /f - This command reloads the performance library and rebuilds the performance counters.
  • lodctr /R - This command reloads all performance counters and their settings from the Windows registry.
• For Windows 7 and Windows Server 2008
  • winmgmt /salvagerepository

To rebuild your WMI repository:

• First, disable and stop the winmgmt service
• Then, remove or rename the C:\Windows\System32\wbem\repository
• Now, start the winmgmt service
• Open command prompt as an administrator and execute the following command:
  • cd C:\Windows\System32\wbem\
  • for /f %s in ('dir /b *.mof') do mofcomp %s
  • for /f %s in ('dir /b en-us\*.mfl') do mofcomp en-us\%s
• Open the performance monitor to verify the computer loading status. Note: If you face any issue in opening the performance monitor, troubleshoot it using this article.

To repair/re-sync your WMI repository:

• Open the elevated command prompt and execute the following command to verify your WMI repository status:
  winmgmt /verifyrepository: If you receive the output as "WMI Repository is consistent", then the repository is not corrupted. Else, troubleshoot using the below given steps
• Execute the following command:
  • winmgmt /salvagerepository: If the repository salvage fails to work, then run the below command to see if it resolves the issue:
  • winmgmt /resetrepository: This will display a “WMI Repository has been reset” message to indicate the function success.

After completing all the above steps, verify if WMI service is running in the services.

• If the service is running, change the startup type to automatic
• Restart the WMI service to proceed with asset scan.

If the above settings are already configured:

• Press Windows and R button to open RUN dialog, and enter "wbemtest".
• Click Connect and select Query.
• Execute the query "select * from Win32_OperatingSystem".
• If this works, resume your inventory scan operation.