Popularly used by millions all over the world, no doubt Mozilla Firefox is surely a top-notch operating system. Despite its growing popularity and unmatchable features, users do face glitches while accessing the same. The error when its stops opening is majorly due to some unwanted corrupt files, add-ons, and interference drivers. In order to overcome such issue, you can either follow the troubleshooting steps on our online portal or get in touch with the expert technicians at the mozilla firefox technical support number. They are trained and qualified to assist you with all your queries 24 * 7.