WMI Scripting Windows 8 error

Question

I have a problem with WMI in a machine with a Windows 8 Home Edition. I need to catch the CPU usage and the ProcessID by process. I've tried so many ways:

ShellExecute in Delphi
A *.bat with the code
A *.vbs
A *.vbs executed by a *.bat
A *.ps1
A *.ps1 executed by a *.bat

(Maybe some of these ways can be really stupid, but I've tried anyway)

In the User-Click it works perfectally, but by a standalone applicantion it doesn't work. I have opened the Security on WMIMGMT.msi of some folders and the execution policy (in PowerShell) now is UNRESTRICTED.

This is the code on the *.ps1 file:

$ErrorActionPreference = "SilentlyContinue"
Stop-Transcript | Out-Null
$ErrorActionPreference = "Continue"
$perflist = (get-wmiobject Win32_PerfFormattedData_PerfProc_Process)
foreach ($p in $peflist) {
  "" + $p.IDProcess + ";" + $p.PercentProcessTime
}

This is the code on *.bat

powershell -ExcetutionPolicy Unrestricted -File "C:\Somefolder\PP.ps1" > C:\SomeFolder\output.txt

All I got is this output:

get-wmiobject : Invalid query "select * from Win32_Win32_PerfFormattedData_PerfProc_Process"
In C:\Somefolder\PP.ps1:4 character: 14
+ $perflist = (get-wmiobject Win32_PerfFormattedData_PerfProc_Process)
+          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     + CategoryInfo         : InvalidArgument: (:) [Get-WmiObject], ManagementException
     + FullyQualifiedErroID : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

Edit1: The code copied as asked:

*.ps1:

$ErrorActionPreference="SilentlyContinue" 
Stop-Transcript | out-null 
$ErrorActionPreference = "Continue"
$perflist = (get-wmiobject Win32_PerfFormattedData_PerfProc_Process) 
foreach ($p in $perflist) {
  "" + $p.IDProcess + ";" + $p.PercentProcessorTime
}

*.bat

powershell -executionPolicy unrestricted -file "C:\MonitorPerformance\test.ps1" > C:\MonitorPerformance\output1.txt

Output: (Consulta inválida = Invalid Query; No = in; caractere = character)

get-wmiobject : Consulta inv lida "select * from Win32_PerfFormattedData_PerfProc_Process"
No C:\MonitorPerformance\test.ps1:4 caractere:14
+ $perflist = (get-wmiobject Win32_PerfFormattedData_PerfProc_Process)
+              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Get-WmiObject], ManagementException
    + FullyQualifiedErrorId : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

The error message in your question was caused by an invalid class name (Win32_Win32_PerfFormattedData_PerfProc_Process), which you corrected. Are you still getting an error? — Ansgar Wiechers
I don't have tested another class with WMI. If you can tell me a code to test, I'll be thankful And to explain, the code in the win8 machine was right, but I wrote wrong the code here — Nick G.
I got news I changed $perflist = (get-wmiobject Win32_PerfFormattedData_PerfProc_Process) foreach ($p in $peflist) { "" + $p.IDProcess + ";" + $p.PercentProcessTime } to: get-wmiobject Win32_OperatingSystem (just a test) and it works! I still have no idea about what's going on... — Nick G.

Anthony Stringer Anthony Stringer · Accepted Answer · 2016-01-07T18:49:17

replace this:

$perflist = (get-wmiobject Win32_Win32_PerfFormattedData_PerfProc_Process)

with this:

$perflist = (get-wmiobject Win32_PerfFormattedData_PerfProc_Process)

WMI Scripting Windows 8 error

2 Answers