If you call SaveToStream on a workbook that contains at least 257 columns, the returned stream contains corrupt data. If you create a new workbook from the stream, this workbook will not contain the correct values. In ad…...zhao April 28, 2025, 1:31pm 2 @Nic0 saveWorkbook.SaveToStream()...created. amjad.sahi April 28, 2025, 2:12pm 3 @Nic0 , Please try using...