Are you having a problem browsing in Mozilla Firefox? If yes then you need to go through the below-mentioned points to resolve the not working issue of your Firefox:
You can try cleaning the cookies and cache data of your system. You can reinstall the Firefox again on your PC. Even you can restart your computer. One can also open Firefox in Safe Mode. Check your system for any malicious programs.
Even after implementing the given steps, if the problem persists, then you can consult Mozilla Firefox technical support phone number that is accessible 24*7. The customer care team will be available round the clock to guide users in fixing the issue.