je pense comme ceci,
Bruno
With Sheets("Résumé")
.Unprotect Password:="MDP"
.Range("A4:L4").AutoFill Destination:=.Range("A4:L1507"), Type:=xlFillDefault
.Range("C15").Select
.Protect Contents:=True, Password:="MDP", userInterfaceOnly:=True, AllowFormattingCells:=True, _
AllowFormattingRows:=True, AllowFiltering:=True
End With
End Sub