If you want to preserve the current state of an Excel file and yet be able to change it, you can always copy the current workbook to a new file. You can then add your changes to the new copy. If the ...

Microsoft Excel has several features designed to help you recover unsaved versions of files and prevent data loss.

While it is technically possible to open an Excel file in Notepad, this is not a good idea. Excel files are binary files that contain complex formatting and data structures. When you open an Excel ...