How to get through security error pages in firefox browser?

user_11973720 0
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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.

firefox google-chrome browser
2 Answers

As of April 5th, 2022, this is how I bypass the You can’t add an exception to visit this site. with Firefox 98.

If you see this without the Add Exception button :

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  1. Open the Preferences of Firefox:

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  1. Open the Privacy & Security tab:

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  1. Scroll down to Certificates and click on View Certificates...

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  1. Open the Servers tab and click on Add Exception...

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  1. Fill in the Location field and click on Get Certificate:

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  1. Click on Confirm Security Exception:

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  1. You should now see your exception, click on Ok:

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  1. Reload your page and you should now be able to see your website :)
user_78104680
  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.
user_119737200
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