Hello Abdullah, follow these steps to change the language of Firefox: 1. Re-download the Firefox version of your choice and in your language from [http://www.mozilla.com/en-US/firefox/all.html the Firefox site for international versions] 2. Close Firefox, by clicking on File and selecting Close . 3. Open your download directory, then double-click on the downloaded installation file. 4. Go through the Firefox installation wizard to complete the installation. Kind regards, Tobbi Firefox Support Volunteer