NPOI.POIFS.FileSystem.NotOLE2FileException

[paul-plaza]

Good day can help me with the following error that is generated when uploading an excel file and trying to read it. in asp.net core 2.0

Where stream is of type IFormFile file ( file.OpenReadStream())

1. ---line where the error occurs--------
  var workbook = new HSSFWorkbook (stream);

2. ---line where the error occurs--------
var workbook = new XSSFWorkbook(stream);

-------------Version NPOI--------------

---------Error------------
NPOI.POIFS.FileSystem.NotOLE2FileException: 'Invalid header signature; read 0xE011BDBFEFBDBFEF, expected 0xE11AB1A1E011CFD0 - Your file appears not to be a valid OLE2 document'

[yang-xiaodong]

@paulPlaza I can't reproduce you error . Can provide more detailed information, such as your environment, code, documents