File Setup To build a CSV file to open in Microsoft Excel, you'll need to decide how many columns you'll use in Microsoft Excel for the categories of information you're preparing in Notepad.

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

To make Notepad files always open in a new or separate window in Windows 11, open Notepad setting and change the 'Opening files' option.