When I try to create a Data Streaming Service for a workbench creating a XLSX file, the resulting file originating from FME Server is recognized as a XLS file instead of XLSX. Thus, the downloaded file is test.xlsx.xls.
How can I guarantee that the file is recognized as XLSX? The content-type returned by FME Server is application/vnd.ms-excel. As far as I can see, this is wrong. It should be application/vnd.openxmlformats-officedocument.spreadsheetml.sheet?