I did not look at your code thoroughly but it is most likely to be a rights issue, you need to have enough rights, in both computers, to do this, which it is not easy to setup, I can't remember the details, but making the story short, the easiest and probably not the best way is to be a Domain Admin, otherwise setting up the rights for doing this was not easy (well, at least it was not easy when I did it like 10 years ago! wow, time flies... but even being an admin in both computers did not work if I remember correctly)

Hugo

>I usually do this to get volume information:
>
>

>            ' Use WMI namespace WMI in which management options will be done
>            If cUsername.Length > 0 Then
>                loManagementScope = New ManagementScope("\\" + lcIP + "\root\cimv2", loConnectionOptions)
>            Else
>                loManagementScope = New ManagementScope("\\" + lcIP + "\root\cimv2")
>            End If
>
>            lcSQL = "SELECT * from Win32_LogicalDisk WHERE DriveType=3 AND VolumeName=""" + lcVolumeName + """"
>
>            ' The ObjectQuery class represents a management query which returns instances or classes 
>            loObjectQuery = New ObjectQuery(lcSQL)
>
>            ' The ManagementObjectSearcher class allows the extration of an object management collection
>            ' in regards to the query specified during the instantiation by the use of the
>            ' ObjectQuery parameter or directly by a string
>            loManagementObjectSearcher = New ManagementObjectSearcher(loManagementScope, loObjectQuery)
>
>            ' The ManagementObjectCollection represents various object management collections extracted from WMI
>            loManagementObjectCollection = loManagementObjectSearcher.Get()
>

>
>But, on a domain resource, this does not work. I have for sure to pass the domain. So, I thought the username used would need to be replaced with Domain\Username. But, this gives a "The RPC server is unavailable." message.
>
>Anyone has succeeded to use this across a domain?