How to get through security error pages in firefox browser?

I'm aware that we use thisisunsafe in Chrome to bypass such error pages but how can I bypass such pages in Firefox? I get the following error when I load the page:-

Firefox detected a potential security threat and did not continue to <site> because this website requires a secure connection.

<site> has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

I tried the following steps to resolve it but it didn't solve the issue:-

  1. Opened a new tab and entered about:config
  2. Clicked on Accept the Risk and Continue
  3. In the search field, type in security.enterprise_roots.enabled and hit enter
  4. I saw one field which was already enabled true
  5. Didn't know what to do next as the field was already enabled true

I'm looking for a workaround of thisisunsafe in Firefox.


    1. In the Mozilla Firefox address bar, type about:config
    2. Look for network.stricttransportsecurity.preloadlist
    3. And set the last field Value to false and restart the browser.