Quickest way to determine if a remote PC is online

Question

I tend to run a lot of commands against remote PCs, but I always check to make sure they are online first. I currently use this code:

If objFSO.FolderExists("\\" & strHost & "\c$") Then
    'The PC is online so do your thing

However, when the remote PC is not online, it takes my laptop ~45 seconds before it times out and resolves to FALSE.

Is there a way to hasten the timeout? Or is there another easily implementable solution to determine if a PC is online?

Answer 1

You could use WMI to ping it.

Function IsOnline(strHost As String) As Boolean

    Dim strQuery As String
    strQuery = "select * from Win32_PingStatus where Address = '" & strHost & "'"

    Dim colItems As Object
    Set colItems = GetObject("winmgmts://./root/cimv2").ExecQuery(strQuery)

    Dim objItem As Object
    For Each objItem In colItems
        If IsObject(objItem) Then
            If objItem.StatusCode = 0 Then
                IsOnline = True
                Exit Function
            End If
        End If
    Next

End Function