In Microsoft windows what if file is double clicked?

In Microsoft Windows, when a file is double-clicked, the operating system attempts to open the file using the default application associated with its file type. For example, double-clicking a .txt file typically opens it in a text editor like Notepad, while a .jpg file might open in an image viewer. If no associated application is found, Windows will prompt the user to select a program to open the file. Additionally, if the file is executable (like a .exe), double-clicking it will run the program directly.