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 workbooks, but can also use the XLS format.

An XLR file is a spreadsheet file from the Microsoft Works software package. Microsoft Works has been discontinued in favor of Microsoft Office so it is not possible to obtain a new and supported copy ...

Does Excel open a Blank screen when you open an existing file? Microsoft Excel, for the most part, tends to work well, but there are times when it buckles and fails to perform even basic tasks. For ...

How to edit Microsoft Office documents stored on Google Drive Your email has been sent Many organizations that rely on Google Apps also use Microsoft Office applications. Mass conversion of highly ...