How does Windows know which app or program to use to open all the different types of files on your computer? It comes down to file associations. Windows associates each file type with a program that can open that type of file, but you have some choice in the matter!
How do I change the file association to an unknown program in Windows 10?
For example, imagine that you just installed Adobe Photoshop on your PC. From now on, you want Windows to use Photoshop to open .jpg files, but currently Windows always opens .jpg files with the default Photos app that comes with Windows 10.
Below we will show you different methods to change file associations in Windows 10 so that your files open with your preferred application.
One way to tell Windows which application to open a certain type of file is through File Explorer. In the example below, JPG files are opened in Microsoft Photos, and we will change the file association so that JPG files open in Adobe Photoshop.