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Why is C++ WMI Not Fetching Data? Error: 0xC0000005

I'm quite new to WMI, I'm following this guide here.

So I pasted that code in the guide and ran it without any issues using the provided query. But when I changed the query to SELECT State FROM Win32_Service I get no data, just the error code 0xC0000005, which I believe is a permissions error?

That same query above works just fine in the PowerShell using the following command:

Get-WmiObject -Query "select State from Win32_Service"

What I've tried

  • winrm quickconfig

So what gives? Why am I having trouble querying the WMI from my C++ code?

EDIT: I found the line that's causing the crash. I'm not sure why it's crashing though.

wcout << vtProp.bstrVal << endl;
Solution

  • I missed this line of code

    hr = pclsObj->Get(L"State", 0, &vtProp, 0, 0);

    Change the first argument to the property whose value you'd like to retrieve.