Failed to initialize all required WMI classes

Question

On my Windows 10 Pro 64-bit PC, when I go to WMI Control in Computer Management under "Services and Applications" and select "More Actions" -> Properties, it displays the following:-

Failed to initialize all required WMI classes.

Win32_Processor: WMI: Invalid class

Win32_WMISetting: WMI: Invalid class

Security information: Successful

Win32_OperatingSystem: WMI Invalid class

However, when I run command "winmgmt /verifyrepository" in an elevated command prompt (as advised in many web-pages) it reports: "WMI repository is consistent" which, I'm led to believe means the WMI Repository is NOT corrupt. Also winmgmt service is up and running.

How do I fix the Invalid class error?

Answer 1

Thank you for your question and reaching out.

I can understand you are facing issue WMI services.

Ran the commands given below from Admin command prompt to reset WMI components and which should not be harm to other Windows services or components.

From command prompt navigate to C:\>windows\system32\wbem

regsvr32 /s %systemroot%\system32\scecli.dll

regsvr32 /s %systemroot%\system32\userenv.dll

regsvr32 cimwin32.dll

mofcomp cimwin32.mof

mofcomp cimwin32.mfl

mofcomp rsop.mof

mofcomp rsop.mfl

for /f %s in ('dir /b /s *.dll') do regsvr32 /s %s

for /f %s in ('dir /b *.mof') do mofcomp %s

for /f %s in ('dir /b *.mfl') do mofcomp %s

regsvr32 wmisvc.dll

wmiprvse /regserver

https://techcommunity.microsoft.com/t5/ask-the-performance-team/wmi-missing-or-failing-wmi-providers-or-invalid-wmi-class/ba-p/375485

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Answer 2

We recently had this issue creep up on a few of our corporate devices after patching:

winmgmt /verifyrepository - responds repository is consistent

but in wmimgmt.msc WMI Control Properties we can see the errors:

Failed to initialize all required WMI classes.

Win32_Processor: WMI: Invalid class

Win32 WMISettmg WMI Invalid class

Security information Successful

Win32_OperatingSystem WMI Invalid class

Solution was discovered we needed to restore WMI Namespace class data, and found we diddnt need to research any needed .mof files by using the mofcomp and regSvr32 commands below. Note the commands are listed along with a restart of the Windows Management Instrumentation (WMI) service and gpupdate to test for any errors. Also note in several cases we had to run through the commands a few times until WMI and RSOP errors resolve.

*** Recompile Mof files for WMI errors ***

-run from elevated cmd prompt:

cd C:\Windows\System32\Wbem

for /f %s in ('dir /b *.mof *.mfl') do mofcomp %s

for %i in (*.dll) do regSvr32 -s %i

net stop winmgmt /y

net start winmgmt

gpupdate /force

Answer 3

Note that .mfl file are in a subdirectory. Say C:\windows\system32\wbem\en-US

Answer 4

Even if winmgmt /verifyrepository is OK,

you can try :

winmgmt /resetrepository