Sub Macro3()
With Sheets("Travail")
Dim Cell As Range
On Error Resume Next
Application.DisplayAlerts = False
For Each Cell In Range("D7:D13")
'Workbooks.Open "LIEN" & Cell.Value & ".xlsx"
F$ = "LIEN" & Cell.Value & ".xlsx": If Dir(F$) > "" Then Workbooks.Open F$
Workbooks.Open F$, 0
Next Cell
End With
End Sub