How to Open an XLS File in Excel. XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save ...

XLS files are spreadsheet files created by Microsoft Office Excel. An Excel spreadsheet can contain anything from images and plain text to graphs and tables and can be opened using Excel.

Locate the file in File Explorer. Click on the View tab at the top and check the File name extensions box. You should now see the .xlsx, .xls, or a similar extension at the end of your Excel file.

Excel users are reporting an odd bug in the way Excel 2010 and 2013 behave. In the past, XLS files produced by various packages (including Salesforce) could be opened by double-clicking on them ...

The Excel File Converter repository contains a Python script that allows users to convert old Excel file formats (.xls) into newer ones (.xlsx), while preserving the data and structure of the original ...

Pythonのopenpyxlライブラリを使ってExcelファイルを読み込むコードを書いたのに、特定のファイルだけエラーが出てしまう…。ファイルは確かにあるし、名前も間違っていない。そんな不可解なエラーに遭遇したことはありませんか？ その時に表示されるのが、InvalidFileException: openpyxl does not support ...