Aspose.Cells - Invalid BIFF8 file


I attached the project. I understand that the file might be indeed corrupt. Just need more details on why is it considered invalid.

Error message: Invalid BIFF8 file.
at .( )
at Aspose.Cells.Workbook.(String , LoadOptions )
at Aspose.Cells.Workbook…ctor(String file, LoadOptions loadOptions)
at AsposeTest4.Program.Main(String[] args) in C:\Users\bjuliao\source\repos\AsposeTest\AsposeTest4\Program.cs:line (491.0 KB)



Thanks for the sample project with template file.

After an initial test, I am able to observe the issue as you mentioned by loading your template file. I found an exception “Invalid BIFF8 file” when loading an XLS file:
Sample code:

var filename = "e:\\test2\\[20180620103237055][SVN_MICS-USA_IBAS][PL][USD][21324]OriginalPL.xls"; 
            var temp = new Workbook(filename, new LoadOptions() { LoadFilter = new LoadFilter(LoadDataFilterOptions.CellData), CheckExcelRestriction = false }); 
            Console.WriteLine("Done") ;

I have logged a ticket with an id “CELLSNET-46214” for your issue. We will look into it soon.

Once we have an update on it, we will let you know here.



This is to inform you that the problem has been fixed (previously recorded as “CELLSNET-46214”). After performing QA and adding other extensions and fixes, we will provide fixed version.



Thanks for using Aspose APIs.

Please download and try the following fix and let us know your feedback.


The issues you have found earlier (filed as CELLSNET-46214) have been fixed in Aspose.Cells for .NET v18.7. Please also check the document/article for your reference:


I can confirm that all the issues I reported are fixed. Thank you!



Thank you for providing the feedback.