пример кода, только что проверенный на PP 2016:
(не забудьте закрыть xlsApp, установить obj пустым и т. Д. c.)
Public Sub StackOverflow()
Dim xlsApp As Object
Dim wkbWorking As Object
Set xlsApp = CreateObject("Excel.Application") 'basically it opens excel application
Set wkbWorking = xlsApp.Workbooks.Add 'it creates new workbook in just opened excel
xlsApp.Visible = True 'makes excel visible
wkbWorking.SaveAs "C:\Temp\PesentationExcel.xlsx"
wkbWorking.Close 'closes workbook
xlsApp.Quit 'closes excel application
'sets variables to nothing
Set wkbWorking = Nothing
Set xlsApp = Nothing
End Sub