Secure Connection Failed An error occurred during a connection to stackoverflow.com. A required TLS feature is missing. Error code: MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING. The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem. No option to refresh the website cache or something like that. Only Try again, Why tihs error force me to no accesss the website. Whenre is the: "I know what i do". :( In Edge works fine.