Since the June Power BI Update, Power BI linked back to MS Access 2016 in Office 365 is reporting: "DataFormatError: The database you are trying to open requires a newer version of Microsoft Access" ...
v-haibl-msft
Microsoft Employee
Microsoft Employee
I cannot repro the same issue on my side. If you issue is not related to this one, I suggest you to create a support ticket at http://support.powerbi.com (see bottom of page).
Best Regards,
Herbert