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PowerShell Error "OpenRemoteBaseKey" on Remote Window XP system

I'm getting this error when I attempt to run code to access the registery on a Windows XP machine (with admin creditals):

PS Y:\> .\get-instprogv1.ps1 <computer name> <output file>
Exception calling "OpenRemoteBaseKey" with "2" argument(s): "The network path was not found.
"
At Y:\Get-InstProgv1.ps1:36 char:62
+     $registry = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey <<<< ($hkey, $computer);
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException
 
You cannot call a method on a null-valued expression.
At Y:\Get-InstProgv1.ps1:38 char:44
+         $reg_uninstall_key = $registry.OpenSubKey <<<< ($reg_uninstall_path);
    + CategoryInfo          : InvalidOperation: (OpenSubKey:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

The code looks like this:

 
param($strComputer,$outFile)

#The purpose of this program is to run against a specific system to
#pick out the LITTERAL appliation name and version name in order to 
#fill out the AppListv2010.csv file.  That file is used to determine 
#installation status of the applications provided in the list, but it
#MUST be exactly copied from the resulting text file.
#
#This application searches both the 32bit and 64bit registry nodes for software.

If (($strComputer -eq $null) -or ($outFile -eq $null))
	{Write-Host "Please enter a computer and path:filename.txt"
	 Write-Host "ex. Get-IntalledPrograms.ps1 1310-A c:\1310-A.txt"
	 exit
	}
ElseIF ((Test-Connection -Computername $strComputer -quiet) -ne $True)	
	{
	Write-Host "Unable to connect to $strComputer"
	exit
	}

function Get-InstalledPrograms($computer = '.') { 

$programs_installed = @{};
$error_action = 'Stop';
$reg_uninstall_paths = @('Software\Microsoft\Windows'`
	+ '\CurrentVersion\Uninstall');

$reg_uninstall_paths += @('Software\Wow6432Node\Microsoft'`
	+ '\Windows\CurrentVersion\Uninstall');
	$hkey = 'LocalMachine';
	
	$registry = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey($hkey, $computer);
	foreach ($reg_uninstall_path in $reg_uninstall_paths) {
		$reg_uninstall_key = $registry.OpenSubKey($reg_uninstall_path);
		if ($reg_uninstall_key -eq $null) {
			continue;
		}
		$key_names = $reg_uninstall_key.GetSubKeyNames();
		foreach ($key_name in $key_names) {
			$key_properties = $reg_uninstall_key.OpenSubKey($key_name);
			$name = $key_properties.GetValue('DisplayName');
			$version = $key_properties.GetValue('DisplayVersion');
			if ($name -ne $null) {
				$programs_installed.$name = $version;
			}
			$key_properties.close();
		}
		$reg_uninstall_key.close();
	}
	$registry.close();
	
	$reg_uninstall_paths = @('Software\Microsoft\Installer\Products');
	$hkey = 'CurrentUser';

	$registry = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey($hkey, $computer);
	foreach ($reg_uninstall_path in $reg_uninstall_paths) {
		$reg_uninstall_key = $registry.OpenSubKey($reg_uninstall_path);
		if ($reg_uninstall_key -eq $null) {
			continue;
		}
		$key_names = $reg_uninstall_key.GetSubKeyNames();
		foreach ($key_name in $key_names) {
			$key_properties = $reg_uninstall_key.OpenSubKey($key_name);
			$name = $key_properties.GetValue('ProductName');
			$version = $key_properties.GetValue('DisplayVersion');
			if ($name -ne $null) {
				$programs_installed.$name = $version;
			}
			$key_properties.close();
		}
		$reg_uninstall_key.close();
	}
	$registry.close();
	
	
return $programs_installed;
} 

Get-InstalledPrograms $strComputer | Format-List | Out-File $outFile

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Why would this work on some machines, and not others.... I can PING all of the systems, weather is runs or not...

Update:  I'm getting "Access Denied" errors when attempting remote computer management...
0
gerhardub
Asked:
gerhardub
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1 Solution
 
gerhardubAuthor Commented:
Anyone?
0
 
gerhardubAuthor Commented:
So I take it no one has a clue to this one?

GB
0
 
Adam LeinssSenior Desktop EngineerCommented:
If you can't remote manage a computer, check the local administrators group on the remote PC to make sure your account is listed (or are in the group(s) listed).
Also make sure the Remote Registry and Server services are running on the remote PC.
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gerhardubAuthor Commented:
Yepper, I've got all of those rights, and the services are running.
0
 
Adam LeinssSenior Desktop EngineerCommented:
The only other thing I can think if is if remote connections are being treated as guest connections, see http://www.experts-exchange.com/Programming/Languages/.NET/ASP.NET/Q_21392654.html on how to check that on the remote PC.
0
 
gerhardubAuthor Commented:
I still have yet as to look into this last comment, which will be done on Monday!
0
 
gerhardubAuthor Commented:
That doesn't appear to be the issue....
0
 
Adam LeinssSenior Desktop EngineerCommented:
I have no further ideas.  If the firewall is off, remote registry is on and you have admin rights on the box you are launching the script from and admin rights on the box you are targeting, it should work.
0
 
gerhardubAuthor Commented:
It would have been helpful to have a remote registry GPO pointer... but that DID end up being the issue.

0
 
Adam LeinssSenior Desktop EngineerCommented:
Remote Registry is just a service, are you saying that a GPO was turning it off?
0
 
gerhardubAuthor Commented:
It wasn't defined in the AD policies, so basically, it was a matter of a few systems had it turned off, and Windows 7 machines had it off by default.
0
 
Adam LeinssSenior Desktop EngineerCommented:
Understood.  I always flip those on when I build an image.  I can see it being turned off in 7 due to security hardening, but I would have thought it comes out of the box turned on on XP.
0
 
gerhardubAuthor Commented:
Yeah, that's what stumped me... it was only a few systems... not all of them. (XP wise)

7, they're were one of two that would have it on, and all of the other had is off.
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