Hi,
We are using this code to save Xlsx file, in works well with Aspose.Cells 8.6 :
saveOptions = new XlsSaveOptions(SaveFormat.Xlsx)
{
CachedFileFolder = Path.GetTempPath(),
ClearData = true
};
workbook.Save(f…...Xlsx Aspose.Cells Product Family...are using this code to save XLSX file, in works well with Aspose...