Skip to content
TrySitePrice

Firefox: Add a Trusted CA

Best/Tutorial

To add a trusted Certificate Authority (CA) to Firefox, you can follow these steps:

  1. First, obtain the root CA certificate from the organization or website you want to trust. This may be provided in a variety of formats, such as a .crt file or a URL.
  2. In Firefox, click on the "Menu" button (three horizontal lines) in the top-right corner of the window and select "Preferences" from the dropdown menu.
  3. In the left-hand sidebar of the Preferences window, click on "Privacy & Security".
  4. Scroll down to the "Certificates" section, and click on the "View Certificates" button.
  5. In the Certificate Manager window, click on the "Authorities" tab.
  6. Click the "Import" button, and locate the root CA certificate file on your computer. If you obtained the certificate via a URL, you can paste the URL into the "File name" field.
  7. Follow the prompts to import the certificate, including selecting the certificate store you want to use (the default is usually fine), and clicking "OK".
  8. The root CA certificate should now be listed in the Certificate Manager under the "Authorities" tab. To verify that the certificate has been successfully installed, you can browse to a website that uses the certificate, and check that the site's SSL certificate is trusted.
rnThat's it! Once the trusted CA has been added to Firefox, you can be confident that any SSL certificates issued by that CA will be recognized as trusted by Firefox.