Firefox browser not opening? Bad addons, driver issues, corrupted files or user profile can cause Firefox to not open or launch on your Windows PC.

To change, select “Google Chrome” or “Firefox” in the list, click on “Manage” and switch to Chrome or Firefox for all file formats that still have “Microsoft Edge” next to them.

Firefox is a free and open source web browser developed by Mozilla Foundation. First released in 2002 under the name Phoenix. It’s available for most operating systems including Windows, macOS, Linux ...