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CWL
Asked: 2019-05-31 07:36:48 +0800 CST

Multiple values returned with GetDwordValue .uvalue

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On a few systems I have GetDwordValue return duplicate values (.uvalue) The commands are

$reg=Get-WmiObject -List -Namespace root\default -ComputerName $ip.ipaddress | Where-Object {$_.Name -eq "StdRegProv"}
$reg.GetDwordValue($HKLM,"System\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 2.0\Server","enabled").uvalue

It returns the values

1
1

If I run this without the .uvalue it gives me this output below and I know were it gets the 1 1 duplicates, just not why.

$reg.GetDwordValue($HKLM,"System\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 2.0\Server","enabled")
__GENUS          : 2
__CLASS          : __PARAMETERS
__SUPERCLASS     : 
__DYNASTY        : __PARAMETERS
__RELPATH        : 
__PROPERTY_COUNT : 2
__DERIVATION     : {}
__SERVER         : 
__NAMESPACE      : 
__PATH           : 
ReturnValue      : 0
uValue           : 1
PSComputerName   : 

__GENUS          : 2
__CLASS          : __PARAMETERS
__SUPERCLASS     : 
__DYNASTY        : __PARAMETERS
__RELPATH        : 
__PROPERTY_COUNT : 2
__DERIVATION     : {}
__SERVER         : 
__NAMESPACE      : 
__PATH           : 
ReturnValue      : 0
uValue           : 1
PSComputerName   :

This happens to about 3 of our servers and cannot figure out why or how to return one value only.

powershell

1 Answers

  1. There is no information where the $ip object comes from… If its type is an array (or any kind of a list, e.g. Object[]), then the code snippet contradict neither the Get-WmiObject cmdlet syntax (-ComputerName <String[]>), nor the GetDWORDValue method of the StdRegProv class.

    Proof: 

    $HKLM = 2147483650
$ip = @( @{ ipaddress = $env:COMPUTERNAME }, 
         @{ ipaddress = $env:COMPUTERNAME } )
$ip.ipaddress.GetType().Name                   #  Object[]
$reg=Get-WmiObject -List -Namespace root\default -ComputerName $ip.ipaddress | Where-Object {$_.Name -eq "StdRegProv"}
$reg.GetDwordValue( $HKLM,"System\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 2.0\Server","enabled").uvalue

    Output:

    D:\PShell\SF\969516.ps1

    Object[]
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