The Windows operating system uses the file extension to understand how to open a file. For example, when you double-click to open a TXT file, Notepad probably opens it.

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.

Notepad always opened .txt files, but I changed to MSWorks after Notepad stopped working. I fixed Notepad, and want to change back to it (to open .txt files). The problem with Notepad was that the ...

A reader would like to know how to change the default program his computer uses to open .jpg files when he double-clicks on a photo file. Most computers will use their operating system’s default ...

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

You can view a Text file in Command Prompt or PowerShell in Windows 11/10. You can view the entire content of TXT, a specific line, etc.

This post explains how to write to a file in Python. You'll discover how to create word files (.docx), spreadsheets (.csv), text files, and more!