If this doesn't work, scan for malware
Firefox not responding resolved
Mozilla Firefox has been around for almost two decades, with numerous improvements in stability and performance. However, it is still not uncommon to encounter cases where the browser crashes right after launch, during routine use or while performing specific activities.
If Firefox on your PC or Mac is not responding, you can try the solutions below to fix the problem.
If Firefox has just crashed on your PC or Mac, try force quitting and restarting it. To quit the browser on your PC, right-click the Start button and select Task Manager. Then, choose Firefox from the list of open apps and select End Task. Then, restart the browser.
