Most commonly, when viewing a secure website, the site identity button in Firefox browser also known as padlock appears green. However, in some circumstances, it may display or show a gray padlock with a red strikethrough or a yellow warning triangle or a broken padlock.
Disable Insecure Connection Icon in Firefox
Under normal conditions, the Site Identity button (a padlock) appears in your address bar when you visit a secure website. You can quickly find out if the connection to the website you are viewing is encrypted and secure. This prevents you from visiting malicious websites that may be trying to obtain your personal information.
The feature is available in the latest Nightly build 59.0 of Firefox web browser, but is not enabled by default. You can enable it to show an insecure connection icon in the address bar of Firefox browser.
Use the following steps to enable this feature.
Open Mozilla Firefox and type about:config in the address bar and press Enter. It’ll show you a warning message, click on “I accept the risk!” button. If you are aware, Firefox’s about:config page actually stores every Firefox setting, including settings for your installed extensions. Non-bold settings are the default settings, while the ‘bolded’ settings are the one’s which have been changed.
Once there, type insecure_connection_icon in Search filter box and hit Enter. it’ll show following preference in the window:
If you observe, this preference is set to False by default i.e. disabled. So, in order to turn this feature ‘on’, double-click on security.insecure_connection_icon.enabled preference and change its value to True.
Alternatively, you can right-click on the preference and select Toggle option.
You will have successfully enabled insecure Connection Icon in Firefox address bar. At any point in time if you decide to disable the feature, double-click on security.insecure_connection_icon.enabled preference again and change its value to False.