Hi Andy,
I'd like to know if you get the Access data by these steps: click Insert > PivotTable > Use an external data source > Choose Connection > Select Table. If so, in the "Select Table" page, you can select the "Enable selection of multiple tables" and then tick several tables at one time.
If it's not your scenario, please let us know the following information so we can assist you further:
- Your detailed steps to create pivot table, make connections to SQL database and select multiple tables.
- The screenshot of "cannot select multiple tables"
- The screenshot of your Office version. Open Excel > File > Account > the part under Product Information.
Regards,
Jared