Mac OS X computers use a default application to open every file type based on its file extension. If you don't want to use the default application when opening a file, you can select "Open With ...

You can change file associations on Windows 10 in three ways. Use ‘Open With’ to quickly change the program for one file type, Default Program Settings to change multiple file associations ...

If you can't change default app by file type in Windows 11/10, then reset the problematic app, remove file type association, etc.

Do you want to open a file type or link with a specific app? Here's how to change the default app settings on Windows 11.

This simple change has successfully reset the default application for your targeted file type; now this program will consistently open when you select a certain type of file.

Each document that you have on your Mac is associated with a default application which macOS uses to open the file whenever you double-click on its icon in Finder. Sometimes you may have a ...

Browsers don’t recognize these files by default. There’s a way to force an association between a file type and an application, but that application still has to recognize the extension.

Switch from File Explorer to an alternative like XYplorer or OneCommander—and set the alternative as the default, with the help of a registry hack.