PBI connections in Excel file

Hello,
We have a report in which a link is provided. User on clicking the link can download an Excel file which is originally saved in Sharepoint. Since couple of weeks when trying to open the downloaded Excel, its throwing an Windows Azure Authentication error. I want to replace that excel with another but nor sure how the connections are made. all i CAN SEE IN THE EXCEL FILE is pbiazure://api.powerbi.com XXXX-b85c-4a3d-aff5-XXXXXXX Model. the data is updated in the excel and user will download that excel from the link provided . I can see the connection information from Excel file->Data->Connections and Queries->Connection properties. Can anyone help me on this

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