“An error occurred while communicating with data source '<data source name>'”
Errors occurred while loading the data source.
The file you are trying to open 'superstore.xls', might be in a different format than specified by the file extension.
Verify whether the file is not corrupted and is from a trusted source before opening the file.
Try to Open the Excel file in Microsoft Excel, and then save it with the .xlsx extension.
Open Tableau Desktop, try to connect the .xlsx file at tableau data source page.
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thanks for the reply