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Working :
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Troubleshooting:
The first step is to download the Microsoft WMIDiag Tool. It will analyze WMI and give you a report with any issues it finds. Unfortunately Microsoft has removed the WMIDiag tool so we can no longer use this tool.
When you run the downloaded .EXE it will ask you where to extract the files. Once extracted right click the WMIDiag VBScript and click Open with Command Prompt
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Once finished check WMIMGMT.MSC to see if it is populating the Properties correctly.
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Rebuild the WMI Repository
If needed we can fully rebuild the WMI Repository. We do not do this on any computer that is out of warranty and/or did not come from us. We can send these instructions to their IT techs.
These instructions came from
https://serverfault.com/questions/795583/wmic-os-alias-not-found
It bases this on a failed WMIDiag tool response but as the tool is no longer available we will presume that the WMI repository is not healthy or giving false healthy responses.
To fully rebuild the WMI Repository follow these steps:
Disable and stop the winmgmt service
Remove or rename C:\Windows\System32\wbem\repository
Enable and start the winmgmt service
Open a CMD prompt as Administrator
In the CMD prompt Navigate to C:\Windows\System32\wbem\
Run the following command:
for /f %s in ('dir /b *.mof') do mofcomp %s
Note: This will take a minute or so to complete.
Now run the command:
for /f %s in ('dir /b en-us\*.mfl') do mofcomp en-us\%sReboot the computer