My settings are:
Excel file on SharePoint documents library.
InfoPath form on SharePoint as a content type that makes RESTful call to Excel file and get data from its ranges. I don't use the data connection file for InfoPath but I manually set it in a rule.
It works fine with HTTP, but when comes into HTTPS, there's a error message:
How to get rid of this? Is there a way to fix at InfoPath side? Or a settings on SharePoint side?