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 ...

When using fromExcel with an XLS File the file is left open after Poiji has returned the list of objects. In my use case, I was not able to save changes to the Excel workbook while my application was ...

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Navigate to Zoho Sheet, the free online Excel viewer (see Resources). Click the "Browse" button in the Local File section, select the XLS file and click "Open." Click the "View" button to view the ...

Go to File > Open and select your Excel file. After opening the file in Excel Safe Mode, save it in a different format through File > Save As, selecting either .csv or .xls.