When a user, on a MacOS Catalina, sets the security.enterprise_roots.enabled to true in Firefox, the certificates are not read from MacOS keychain store. The method used to set the parameter to true: Use Firefox on MacOS Catalina, type 'about:config' in the address bar. If prompted, accept any warnings. Right-click to create a new boolean value, and enter 'security.enterprise_roots.enabled' as the Name Set the value to 'true' What is your recommendation to bypass this problem without manually importing the certificates in the FF certificates authorities ? The goal is to read the certificates from the system store. This parameter works perfectly on MacOS Mojave & Windows.