FireFox is a Web Browser like Chrome or Edge. The fie you are trying to open
is an installer or Firefox, not a document. If you can find the file in under
or your download directory in your browser you used to download the file, you
Mac will open it if you click to double click in the file nam
Hello Marc,
If you are trying to install Firefox, please have the Finder application on
MacOS open the .dmg file, and then you can drag and drop the Firefox.app file
(inside the window that pops up after opening the .dmg file with Finder) into
your Applications folder to install Firefox. I don
