How to find Windows Updates on a remote computer using WUA and wsusscn2.cab

REM ************************************************************
REM Url to download the latest offline update cab file
REM http://go.microsoft.com/fwlink/?LinkID=74689
REM ************************************************************
 
ON ERROR RESUME NEXT
 
' Here we connect to the remote PC
Set UpdateSession = CreateObject("Microsoft.Update.Session", "10.0.0.251")
 
Wscript.Echo "Error Number 0: " & Err.Number
Wscript.Echo "Error Description 0: " & Err.Description
 
' Get the service manager and point it at the cab file
Set UpdateServiceManager = CreateObject("Microsoft.Update.ServiceManager")
Set UpdateService = UpdateServiceManager.AddScanPackageService("Offline Sync Service", "c:\downloads\Microsoft\wsusscn2.cab")
Set UpdateSearcher = UpdateSession.CreateUpdateSearcher()
 
Wscript.Echo "Error Number 1: " & Err.Number
Wscript.Echo "Error Description 1: " & Err.Description
 
' Inform the searcher that it is using a different server (cab file)
UpdateSearcher.ServerSelection = 3 ' ssOthers
UpdateSearcher.ServiceID = UpdateService.ServiceID
 
Set SearchResult = UpdateSearcher.Search("IsInstalled=0 and Type='Software'")
 
' HERE'S WHERE IT FAILS WHEN WE TRY TO CHECK A REMOTE COMPUTER WITH THE CAB FILE
Wscript.Echo "Error Number 2: " & Err.Number
Wscript.Echo "Error Description 2: " & Err.Description
 
Set Updates = SearchResult.Updates
 
If searchResult.Updates.Count = 0 Then
    WScript.Echo "There are no applicable updates."
    REM WScript.Quit
End If
 
Wscript.Echo "Total Updates: " & searchResult.Updates.Count & vbcrlf
if updates.Count > 0 then
    For I = 0 to searchResult.Updates.Count-1
        Set update = searchResult.Updates.Item(I)
        WScript.Echo vbcrlf & "Title: " & update.Title
        WScript.Echo "Type: " & update.Type
        Wscript.Echo "MsrcSeverity: " & update.MsrcSeverity & vbcrlf
        
    Next
end if