Errors in powershell scripts for checking IE versions

Hi folks,

I am write  script for checks IE versions on workstations of OU:


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$array =@()
$computernames = Get-ADComputer -Filter * | where {$_.distinguishedName -like "*OU=w7,OU=auto,dc=contoso,dc=com*" } | select-object -expa Name

foreach ($server in $computernames)
{
$reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $server)
$key = $reg.OpenSubkey("SOFTWARE\Microsoft\Internet Explorer")
$value = $key.GetValue('svcUpdateVersion')
 $obj = New-Object PSObject          
        $obj | Add-Member -MemberType NoteProperty -Name "ComputerName" -Value $server          
        $obj | Add-Member -MemberType NoteProperty -Name "IEVersion" -Value $value  
        $array += $obj  
}  
$array | select ComputerName,IEVersion | export-csv d:\IE_Version2.csv

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I am receive following error messages:

 

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    Exception calling "OpenRemoteBaseKey" with "2" argument(s): "The network path was not found.
"
At C:\PowerShell\Scripts\5-october.ps1:6 char:1
+ $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $server)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : IOException

You cannot call a method on a null-valued expression.
At C:\PowerShell\Scripts\5-october.ps1:7 char:1
+ $key = $reg.OpenSubkey("SOFTWARE\Microsoft\Internet Explorer")
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

You cannot call a method on a null-valued expression.
At C:\PowerShell\Scripts\5-october.ps1:8 char:1
+ $value = $key.GetValue('svcUpdateVersion')
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

Exception calling "OpenRemoteBaseKey" with "2" argument(s): "The network path was not found.
"
At C:\PowerShell\Scripts\5-october.ps1:6 char:1
+ $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $server)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException

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any help apprecated
nesher13Asked:
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David Johnson, CD, MVPOwnerCommented:
##############################################################################
##
## Get-RemoteRegistryKeyProperty
##
## From Windows PowerShell Cookbook (O'Reilly)
## by Lee Holmes (http://www.leeholmes.com/guide)
##
##############################################################################

<#

.SYNOPSIS

Get the value of a remote registry key property

.EXAMPLE

PS >$registryPath =
     "HKLM:\software\Microsoft\PowerShell\1\ShellIds\Microsoft.PowerShell"
PS >Get-RemoteRegistryKeyProperty LEE-DESK $registryPath ExecutionPolicy

#>

param(
    ## The computer that you wish to connect to
    [Parameter(Mandatory = $true)]
    $ComputerName,

    ## The path to the registry item to retrieve
    [Parameter(Mandatory = $true)]
    $Path,

    ## The specific property to retrieve
    $Property = "*"
)

Set-StrictMode -Version Latest

## Validate and extract out the registry key
if($path -match "^HKLM:\\(.*)")
{
    $baseKey = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey(
        "LocalMachine", $computername)
}
elseif($path -match "^HKCU:\\(.*)")
{
    $baseKey = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey(
        "CurrentUser", $computername)
}
else
{
    Write-Error ("Please specify a fully-qualified registry path " +
        "(i.e.: HKLM:\Software) of the registry key to open.")
    return
}

## Open the key
$key = $baseKey.OpenSubKey($matches[1])
$returnObject = New-Object PsObject

## Go through each of the properties in the key
foreach($keyProperty in $key.GetValueNames())
{
    ## If the property matches the search term, add it as a
    ## property to the output
    if($keyProperty -like $property)
    {
        $returnObject |
            Add-Member NoteProperty $keyProperty $key.GetValue($keyProperty)
    }
}

## Return the resulting object
$returnObject

## Close the key and base keys
$key.Close()
$baseKey.Close()

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Example:
$reg = "hklm:\software\microsoft\Internet Explorer\"
.\Get-RemoteRegistryKeyProperty.ps1 mycomputtername $reg

which on my machine resulted in :

Version           : 9.11.9841.0
svcKBFWLink       : http://go.microsoft.com/fwlink/?LinkId=393949
svcVersion        : 11.0.9841.0
svcUpdateVersion  : 11.0.8
MkEnabled         : Yes
Build             : 99841
W2kVersion        : 9.11.9841.0
IntegratedBrowser : 1
svcKBNumber       : KB2953522
0
David Johnson, CD, MVPOwnerCommented:
Your Code implementing my code:
$array =@()
$computernames = Get-ADComputer -Filter * | where {$_.distinguishedName -like "*OU=w7,OU=auto,dc=contoso,dc=com*" } | select-object -expa Name

foreach ($server in $computernames)
{
$reg = "hklm:\software\microsoft\Internet Explorer\"
$key = .\Get-RemoteRegistryKeyProperty.ps1 $server $reg
$value = $key.GetValue('svcUpdateVersion')
 $obj = New-Object PSObject          
        $obj | Add-Member -MemberType NoteProperty -Name "ComputerName" -Value $server          
        $obj | Add-Member -MemberType NoteProperty -Name "IEVersion" -Value $value  
        $array += $obj  
}  
$array | select ComputerName,IEVersion | export-csv d:\IE_Version2.csv 

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0
QlemoBatchelor, Developer and EE Topic AdvisorCommented:
nesher13, that code looks pretty much like written by becraig. Is that the case?
Anyway, it should be cleaned up. But what you really want to do is to check for the machine being reachable before trying to read its registry.
Get-ADComputer -Filter * |
  where {$_.distinguishedName -like "*OU=w7,OU=auto,dc=contoso,dc=com*" } |
  select-object -expand Name |
  % {
    if (Test-Connection -count 1 -TimeToLive 100 $_)
    {
      $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $_) 
      $key = $reg.OpenSubkey("SOFTWARE\Microsoft\Internet Explorer") 
      $value = $key.GetValue('svcUpdateVersion')
    } else {
      $value = $null
    }
    New-Object PSObject -Property @{
      ComputerName = $_
      IEVersion    = $value  
    }
  } |
  select ComputerName,IEVersion | export-csv -NTI d:\IE_Version2.csv

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The CSV lists all PCs, and if offline the version string is empty.
0

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Justin YeungSenior Systems EngineerCommented:
I think all you have to do just change the $server to $server.name.

$server in get-adcomputer will return the result of all the info but not a name.

$reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $($server.name)) 

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0
QlemoBatchelor, Developer and EE Topic AdvisorCommented:
Justin, that is what the -Expand in Select-Object is for: The result is a string instead of an object with a name property.
0
Justin YeungSenior Systems EngineerCommented:
didn't see that line lol
0
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