Win32_PnPSignedDriver only have 5 properties - windows

Question

I have some problem with querying the Win32_PnPSignedDriver.
Here is the code that i use to querying the PnPSignedDriver properties.
string query = "Select * from Win32_PnPSignedDriver";
tbLog.Clear();
ManagementObjectSearcher objSearcher = new ManagementObjectSearcher( "root\\CIMV2", query );
ManagementObjectCollection objCollection = objSearcher.Get();
var managementObject = objCollection.OfType<ManagementObject>().FirstOrDefault();
PropertyDataCollection props = managementObject.Properties;
foreach ( PropertyData prop in props )
{
tbLog.AppendText( String.Format( "Property name: {0}\r\n", prop.Name ) );
}
When I run the query on my computer, the result is:
Property name: Caption
Property name: ClassGuid
Property name: CompatID
Property name: CreationClassName
Property name: Description
Property name: DeviceClass
Property name: DeviceID
Property name: DeviceName
Property name: DevLoader
Property name: DriverDate
Property name: DriverName
Property name: DriverProviderName
Property name: DriverVersion
Property name: FriendlyName
Property name: HardWareID
Property name: InfName
Property name: InstallDate
Property name: IsSigned
Property name: Location
Property name: Manufacturer
Property name: Name
Property name: PDO
Property name: Signer
Property name: Started
Property name: StartMode
Property name: Status
Property name: SystemCreationClassName
Property name: SystemName
But when i ran the same code on the production machine the result is:
Property name: DriverDate Property name: DriverDesc
Property name: DriverVersion Property name: Index Property
name: ProviderName
Does anyone know why I have 2 different results?
Does this means that the WMI is corrupt and I need to rebuild the WMI on the production machine?
Thanks,
Fitriadi