You should click on the Tools menu and select the Options tab and then go to ‘Advance’ panel and press the Network tab. If the error Secure Connection Failed on Firefox, keeps on showing and is not fixing on its own, This error might occur because your computer or device’s configuration is via proxy.
#Mozilla firefox insecure connection fix how to#
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It is free and open for everyone to use and is available on Windows, MacOS, Linux operating systems, Android, iOS, etc. Mozilla Firefox is a web browser that is used by millions of people all around the world.