Download and Install Mozilla Firefox browser at your system. It is also used as other browsers like Microsoft Edge or Microsoft Internet Explorer. You can download Mozilla as your private browser by setting up with a few steps. First, update your previously installed Mozilla app and then click at the Menu of the Firefox browser and select the Options icon. Go to the General Panel and choose the option Make Default. Settings page will open with the browser list to create as your default browser, Scroll down and select Firefox Browser and now, Firefox is your default browser and close settings and save changes. Any issue in these steps, then move to Mozilla Helpline Number to remove it.