Sometimes, you have to set the default program a few times before Windows gets it right, if at first you don’t succeed and all that.
There are more file types than one can shake a stick at, but now you know how to associate them with a program that knows how to make sense of them. These are relatively few though, as every time a proprietary file type comes along, a third party application is configured to allow free access. You may see some file types that don’t have alternatives, this is normal because many program developers also create proprietary file types that can only be opened with that program. This only works with files and not with folders, drives or executables but can be useful if you want to apply a special effect to an image or want to test something in a different program without changing the program you usually use to work with that file. If the app you want isn’t show, select Choose another app and choose it from the new window that appears.In Windows XP, there was if I remember correctly. That gave me as a result all the files containing doc, not necessarily with that file extension, including folders named 'doc'. doc in the search bar on the top right of the window. Right-click on a file and select Open with… and choose an option from the slide menu that appears. In Windows Explorer, I would like to search for all files in a specific folder and its subfolders with the file extension.The classic applet to change default apps has also been converted to a page in Settings. Personalization, Network options, User Account management and many other options can be found there. This is useful for trying out a program before setting it as your go-to app. Starting with Windows 10, Microsoft moved plenty of classic options from the classic Control Panel to the Settings app. If you have a file type that you would occasionally like to open with a particular program but don’t want to set it as default, you can do that too.
Opening File Types Temporarily with a Program in Windows 10