Office Web Apps 2013 - Excel data connection authentication error

Hi,

when I try the Data Connection Refresh on my Office Web Apps 2013 service I receive the error:

I have looked on the internet and documentation and the problem was solved using the Secure Store

http://www.wictorwilen.se/sharepoint-2013-office-web-apps-2013-and-excel-files-with-data-connections-and-secure-store

My problem is I have many different user with different data access permission and is not possible the duplication of all user as credentials in secure store. I can configure Office Web Apps 2013 use the Sharepoint/Windows authenticated user exactly as ExcelServices?

Actually I have used  "New-SPWOPISuppressionSetting -Extension XLSX -Action View" and bypass the problem. The user display the file and refresh connection. But if they go to EDIT IN EXCEL ONLINE the problem come again!

Lorenzo Soncini

LSo Lorenzo Soncini Trento TN - Italy