Using WMI Delete method

This topic contains 3 replies, has 3 voices, and was last updated by  Richard Siddaway 1 year, 6 months ago.

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  • #34948



    I have a PowerShell script that uses the WMI COM object to connect to the SCCM server to delete the device from the SCCM server before I add the device to the SCCM server.

    When I used WMI in VBScript to connect to the SCCM server and delete the device, it works fine. However, when I translated the VBScript code to PowerShell, it generated the output below, and the device is not deleted:

    void Delete_ (int, IDispatch)

    The VBScript code is from this link at:, which I translated into the PowerShell code as shown below:

    $sccmServer = 'MySCCMServer'
    $siteCode = 'MySCCMSite'
    $computer = 'PC1'
    $username = 'Domain\user'
    $password = 'secrete!'
    $objSWBemlocator = New-Object -ComObject WbemScripting.SWbemLocator;
    $objWMIService = $objSWBemlocator.ConnectServer($sccmServer,"root\SMS\site_"+$siteCode,$userName,$password);
    $strQry = "SELECT ResourceID FROM SMS_R_System WHERE Name='$computer'";
    $objEnumerator = $objWMIService.ExecQuery($strQry);
    foreach ($objInstance in $objEnumerator)
    	foreach ($objItem in $objInstance.Properties_)
    		$resourceId = $objItem.Value;
    $objDevice = $objWMIService.Get("SMS_R_System='$resourceId'")
    I also try:
    $objDevice = $objWMIService.Get("SMS_R_System='$resourceId'") | % {$_.Delete_}
    and the result is the same.

    Any help or comment will greatly be appreciated.

    Thanks in advance.

  • #34950

    Dave Wyatt

    When you call methods on objects in PowerShell, you have to include parentheses (even if you're not passing in any arguments.)

  • #34951



    That did it.

    Thank you for the help!

  • #34966

    Richard Siddaway

    You really should look at using the WMI cmdlets instead of using the COM objects like this

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