Why isn't Mozilla Firefox working?

There was an error launching the application. This error indicates that either Firefox is not installed or your shortcut to it is incorrect. Make sure that Firefox is installed at the location specified by the shortcut. If it isn't, install Firefox if necessary, then modify the shortcut to point to the correct location. read more

Can you pls direct your question on Firefox Support forum: Ask a Question | Mozilla Support with some more details and screenshot, if possible. This will help our contributors solve your issue quickly. read more

If you just upgraded Firefox and it can no longer open any websites but other browsers or programs can, see the Fix problems connecting to websites after updating Firefox article. If no programs can open websites, see the aptly named Firefox and other browsers can't load websites article. read more

This error indicates that either Firefox is not installed or your shortcut to it is incorrect. Make sure that Firefox is installed at the location specified by the shortcut. If it isn't, install Firefox if necessary, then modify the shortcut to point to the correct location. read more