Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside. However, [PortalRunner] has ...

Kavindu installed KMPlayer, then discovered that more file types opened in KMPlayer than he wanted. When you open a data file, Windows uses the file’s extension (such as .docx, .mp3, .jpg) to see in ...

I can't quite figure it out. Personally, I would be lost without file extensions. How do you know what program to open files up in? How do you tell the difference between pictures and text files?

Dylan Turck is a PC hardware, software, and gaming reporter who loves writing how-to guides and in-depth features on the latest tech products. When he's not shocking himself by pulling electronics ...