Question

VBScript to query WMI on remote machine

Asked by: fwecoadmin

I want to run WMI queries on remote machines via vbscript. I get this eror message:
Error: "The RPC server is unavailable."
Code: 800706BA
Source: SWbemLocator

I have tried adding this user to the cimv2 namespace in the WMI Control Properties found in computer management.

What do I need to setup on the client machine to be able to run WMI scripts via vbscript from another machine?

strComputer = "192.168.100.202"
strUser = "Administrator"
strPassword = "**********"
strDomain = "**********" 
 
Set objSWbemLocator = CreateObject("WbemScripting.SWbemLocator")
Set objSWbemServices = objSWbemLocator.ConnectServer(strComputer, "root\cimv2", strUser, strPassword, "MS_409", "ntlmdomain:" & strDomain)
Set colSwbemObjectSet = objSWbemServices.ExecQuery("select * from CIM_LogicalDisk")
 
Outstr = ""
 
For Each objProcess in colSWbemObjectSet
	Outstr = Outstr & objProcess.Name &VbCrLf
 
Next
 
Wscript.Echo Outstr

                                  
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Asked On
2008-03-04 at 12:27:12ID23213918
Tags

Microsoft

,

Windows

,

XP

,

firewall ports open

Topic

VB Script

Participating Experts
1
Points
500
Comments
8

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Answers

 

by: merowingerPosted on 2008-03-04 at 12:41:23ID: 21044892

why don't you take the following object?

strComputer = "."
 
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2")
Set colItems = objWMIService.ExecQuery("SELECT * FROM Win32_LogicalDisk")

                                              
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by: fwecoadminPosted on 2008-03-04 at 13:45:32ID: 21045436

Ok, so that will allow me to connect, but I was using the other method because the Microsoft Platform SDK recommended the other way for elevating priveleges. Which brings me to the REAL HURDLE.

When I run this script on the local PC (with . as the strComputer) I get all the mapped drives on the computer, but when I run it locally via this script it will only show me the physical drives on the computer.
I am only interested in the network drives, so my query will end up like this:
SELECT Name, ProviderName FROM Win32_LogicalDisk where drivetype = 4

When I run this remotely it returns nothing.
Locally it provides me a list of all my mapped network drives.

 

by: merowingerPosted on 2008-03-04 at 13:48:47ID: 21045463

you started it with strComputer = "remotepcname" ?

 

by: fwecoadminPosted on 2008-03-04 at 14:07:15ID: 21045637

That is correct.
Sorry, now that I'm reading my previous post I see that I got a little tongue-tied.

When I run this script on a computer, and strComputer = ".", I get all of the logical drives, including physical and network drives.

When I run this script remotely  (strComputer = "192.168.100.220") and it connects to the same computer I previously ran the script on locally, I only get the physical drives.

Am I making myself clear enough?

 

by: merowingerPosted on 2008-03-04 at 14:15:14ID: 21045702

yes :)
OK try the WMI Object Win32_MappedLogicalDisk not Win32_LogicalDisk
For debugging don't filter for a drive type

 

by: fwecoadminPosted on 2008-03-04 at 14:27:09ID: 21045813

Yes, I am trying to do as little filtering as possible right now, I just wanted to make my intentions clear.

In my initial post I was using the highest class on the inheritance tree.

Win32_MappedLogicalDisk inherits from CIM_LogicalDisk, so I am querying the source of all of these subclasses you are querying.

When I query Win32_MappedLogicalDisk I get no results, yet if I run the query locally I get all the mapped drives.

WHEN I RUN THE SCRIPT LOCALLY I GET DIFFERENT RESULTS FROM WHEN I RUN IT OVER THE NETWORK.
It doesn't matter what class I am querying, there is something I am missing.

 

by: fwecoadminPosted on 2008-03-04 at 14:31:16ID: 21045853

Nevermind, I found it...
------------------------------------------------
From the platform SDK:
------------------------------------------------
Class:
Win32_MappedLogicalDisk

Remarks:

The instances returned for this class are as follows, supposing that user A is enumerating the instances:

The provider looks for a logon session of user A on that machine:

If there is one (and only one) such logon session, then the provider returns the mapped drives of that session.
If there is more than one session for user A on the machine, then no mapped drive instances are returned (because the provider has no reasonable way of deciding which session to use).
If there are no sessions of user A running, and there is a locally logged on user B:

If there is a single session for user B, then the provider impersonates A and returns the mapped drives of user B. This case supports the scenario of help desk wanting to see the instances of a locally logged on user. However, whether instances are returned depends on the Local Security Policy settings in the Control Panel Administrative Tools. If the following policy is set to "Object Creator", then no mapped drive instances are returned even if A is a member of the Administrators group:
"System object: default owner for objects created by members of the administrators group."
On Windows XP, the default setting for this security policy is "Object Creator".

Again, if there is more than one session of user B running on the machine, then the provider has no way of deciding which to use. In this case, no mapped drive instances are returned.

 

by: fwecoadminPosted on 2008-03-04 at 14:32:54ID: 31436710

I'll give you the points because you pointed me in the right direction, but I have to give you a C.

20120131-EE-VQP-002

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