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

If you can’t seem to change the default apps in either Windows 10 or 11, or if the default apps keeps changing for a particular app, file type, or protocol for whatever reason, here are the ...

Windows 11 can make it easier to access your extensions through apps. Here's how. Windows 11 can keep track of the apps you open and set them by default for faster navigation.

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 ...

Apps that open files In macOS, you can change what app opens a specific file type from the file itself. Right-click a file that you want to change the default app that opens, and select Get Info.

There's another way you can change a file type's associated app in macOS: Right-click (or Ctrl-click) on the file in a Finder window and select Get Info.

Whether you use Windows or macOS, you can change the default application for a particular file type to another preferred program. Let’s see how this plays out across these different platforms.

How to temporarily launch a file in a different app This is very easy and it won’t change the way your Mac treats files of that type in the future.

Mac 911 MacOS: How to change the default app for a file Only file types associated with applications receive automatic mappings.

We show you multiple ways using which you can change File Type.r Extensions or Format on Windows 11/10. You can also use the Command Prompt.