Open-AudIT

I get the following error on a XP-Client:

wbemErrInvalidClass - class does not exist on this system. (Win32_USBDevice)

do I have to install an additional Software for the Printer-Query?

When you run the audit in cscript does the error include a line number?

So run "cscript audit_windows.vbs" and post the error output.

You shouldn't have to install anything on the target PC.
What version of Windows is this failing on?
OAv2 supports Windows 2000 and up.
You "could" try it on WinNT... you would need to install IE5, cscript and WMI though - and no guarantees...

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I [url=http://www.open-audit.org/phpBB3/viewtopic.php?f=20&t=5924#p20758]helped someone earlier[/url] with a problem around the Printer stuff. I don't see any problem myself so it's hard to test.

One thing I noticed was the code tries to check for errors:
[code]on error resume next
Set colItems2 = objWMIService.ExecQuery("Select * FROM Win32_USBDevice where Caption = '" & objItem.DriverName & "'",,32)
error_returned = Err.Number : if (error_returned <> 0 and debugging > "0") then wscript.echo check_wbem_error(error_returned) & " (Win32_USBDevice)" : audit_wmi_fails = audit_wmi_fails & "Win32_USBDevice " : end if
on error goto 0
if IsEmpty(colItems2) then[/code]
But if there is some error and colItems2 isn't valid the IsEmpty test doesn't work because it's always false. Then we try and iterate over the bad colItems2 and have a problem. I tried to get this fixed earlier but didn't get it tested.

Instead of IsEmtpy(colItems2) use IsCollectionEmpty(colItems2) and add this function at the end of the audit script:
[code]Function IsCollectionEmpty( in_collection )
If TypeName( in_collection ) <> "Nothing" Then
If in_collection.Count > 0 Then
IsCollectionEmpty = false
Else
IsCollectionEmpty = true
End If
Else
IsCollectionEmpty = true
End If
End Function[/code]

the detailed Error-Message is:

wbemErrInvalidClass - class does not exist on this system. (Win32_USBDevice)
C:\Dokumente und Einstellungen\Usernaname\Desktop\audit_windows-v10.v
bs(2192, 7) SWbemObjectSet: Unbekannter Fehler

I think it is the first line Win32_USBDevice.. appears.

In my WMI-Explorer the Win32_USBDevice doesn´t appear too.

This doesn´t work, if i parse this i get an error in the second line of the parsed part at the end of the script.

wbemErrInvalidClass - class does not exist on this system. (Win32_USBDevice)
C:\Dokumente und Einstellungen\username\Desktop\audit_windows-v10.v
bs(6426, SWbemObjectSet: Unbekannter Fehler


[quote="jpa"]I [url=http://www.open-audit.org/phpBB3/viewtopic.php?f=20&t=5924#p20758]helped someone earlier[/url] with a problem around the Printer stuff. I don't see any problem myself so it's hard to test.

One thing I noticed was the code tries to check for errors:
[code]on error resume next
Set colItems2 = objWMIService.ExecQuery("Select * FROM Win32_USBDevice where Caption = '" & objItem.DriverName & "'",,32)
error_returned = Err.Number : if (error_returned <> 0 and debugging > "0") then wscript.echo check_wbem_error(error_returned) & " (Win32_USBDevice)" : audit_wmi_fails = audit_wmi_fails & "Win32_USBDevice " : end if
on error goto 0
if IsEmpty(colItems2) then[/code]
But if there is some error and colItems2 isn't valid the IsEmpty test doesn't work because it's always false. Then we try and iterate over the bad colItems2 and have a problem. I tried to get this fixed earlier but didn't get it tested.

Instead of IsEmtpy(colItems2) use IsCollectionEmpty(colItems2) and add this function at the end of the audit script:
[code]Function IsCollectionEmpty( in_collection )
If TypeName( in_collection ) <> "Nothing" Then
If in_collection.Count > 0 Then
IsCollectionEmpty = false
Else
IsCollectionEmpty = true
End If
Else
IsCollectionEmpty = true
End If
End Function[/code]

Hi All,

Running into the same issue here. System is a 32bit Windows XP PRo system. The above suggested fix did not resolve the issue.

Any other ideas?

- John

Interesting.
Win32_USBDevice does not appear here -http://msdn.microsoft.com/en-us/library/aa394084(v=vs.85)
But it does appear in search results here - http://social.msdn.microsoft.com/search ... _usbdevice
I am wondering if Win32_USBDevice is installed as part of SMS (or SCCM or something else)... ?
More investigation needed.

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Ignore everything in my earlier post. Smoking something good lately. The ExecQuery returns an SWbemObjectSet and not a collection.

That said I also don't have the Win32_USBDevice class in Win XP or Win 7 and Google searching seems to back the SCCM install theory.

Although I do think you're not going to enter the IsEmpty because colItems2 is likely initialized by an earlier call to ExecQuery that puts its results in colItems2. I wonder if you could then try to iterate over this previous colItems2 and have trouble?

Just weighing in here with a "me too". For me it's happening on a Win7 64bit workstation with a locally attached Brother USB printer.

For now I just disabled the checking of printers in the audit as it's not overly important to me.

I'm happy to do testing of an updated audit_windows script if need be.

Cheers

Darren

I got the same problem here.
But with some WinXP clients.

I deactivated it for now.