On the right side, select the Open checkboxes for the file types that you want to open in the Protected View. Now, select the Open selected file types in Protected View radio button at the bottom.

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 ...

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.

The Online Tech Tips blog explains how to use a registry hack to add an "Open in New Excel Instance" item to your context menu—which will open your spreadsheet in a separate copy of Excel, so ...

A Python tool for batch formatting Excel workbooks with automated styling, data validation, and worksheet protection - CrueChan/excel-format-tool ...

Reader Paul writes in with an interesting tip for using relative paths in a batch file: you can use a special code to represent the current path—useful for batch files on a Flash drive. We've ...