'nécessite d'activer la reference Microsoft WMI Scripting Library
Dim objProcess As WbemScripting.SWbemObject
Dim colProcessList As WbemScripting.SWbemObjectSet
Dim objWMIService As WbemScripting.SWbemServices
Dim strComputer As String
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set colProcessList = objWMIService.ExecQuery _
("Select * from Win32_Process Where Name = 'Excel.exe'")
MsgBox colProcessList.Count