Firefox: This connection is not trusted
If you want to open a website in Firefox, the message "This connection is not trusted" may appear. We'll show you what that means and how to solve the problem.
Firefox: This connection is not trusted - what does that mean?
- If you call up a website that starts with "https" instead of "http", the connection between you and the website is encrypted.
- In order for a website to offer a secure connection, it needs special certificates that are first checked by the browser.
- If the message "This connection is not trusted" appears in Firefox, the authenticity of the page can no longer be checked using the certificate. There can be several reasons.
- In the next paragraph you will read what causes the error and how you can solve the problem.
Firefox: This connection is not trusted - you can do that
If the message is displayed, it is not an unsafe website. Firefox just can't verify the identity.
- With the button "leave this page" you stay on the safe side. If you don't know the website, you shouldn't take any risks here. If certificate problems occur on reputable websites, these are usually resolved after a few hours or days.
- Click the "Technical Details" button for more information. If you can fix the displayed error yourself, Firefox will inform you.
- If you are sure that this is a reputable website, click on the "I know the risk" button. You then need to add exceptions and manually download and confirm the certificate.
- Tip: Open the folder "C: \ Users \\ AppData \ Roaming \ Mozilla \ Firefox \ Profiles" and delete the file "cert8.db". After restarting Firefox, the certificate file is created again and the problem may be resolved.
In the next practical tip, we will show you the secret functions of Firefox.