Open your Internet browser and go to the Mozilla Firefox download page. Click the Free Download button in the center of the page. Once the download has completed, click Run or on the download itself (usually in the lower-left corner of your browser window). Follow the prompts to install Mozilla Firefox.How do I launch Firefox browser?
Go to the Windows Start menu and click the Settings icon. Click Apps, then choose Default Apps on the left pane. Scroll down and click the entry under Web browser. Click on Firefox in the dialog that opens with a list of available browsers. Firefox is now listed as your default browser.What is the newest Firefox?
Starting with version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks. This was gradually accelerated further in late 2019, so that new major releases occur on four-week cycles starting in 2020. Firefox 85 is the latest version, which was released on January 26, 2021.