Antwort
Public Sub Ersetzen()
Dim i As Long
'Blattname anpassen
With ThisWorkbook.Worksheets("Tabelle2")
For i = 2 To .Cells(.Rows.Count, "A").End(xlUp).Row
'Dateiname und Blattname anpassen
ThisWorkbook.Worksheets("Tabelle1").Cells.Replace What:=.Cells(i, 1), _
Replacement:=.Cells(i, 2), LookAt:=xlPart
Next i
End With
End Sub