Get-CimInstance PowerShell cmdlet doesn't have any methods

If you've moved from the Get-WmiObject to the new Get-CimInstance cmdlets you may find that these no longer have the methods available that you would have had when using Get-WmiObject.

This is because everything is being routed correctly though the WS-MAN protocol and the objects that are returned are not code and cannot be executed.

It's a simple work around - just pipe the object back to the Invoke-CimMethod cmdlet...

$printers = Get-CimInstance Win32_Printer
$descriptor = $printers[0] | Invoke-CimMethod -MethodName GetSecurityDescriptor

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