Open Firefox and enter
about:config in the URL bar. Accept any warnings that appear
security.enterprise_roots.enable, set it to
This guide applies to Firefox, Firefox ESR, Librewolf, and Thunderbird. Mozilla apps need to be configured to use the certificate store of your device. To find out why Mozilla does this differently, you can read their blog post on the topic (TLDR: for security purposes).
Select the hamburger menu ->
Settings. Search for
security devices and select
When the Device Manager dialog window opens, select
Give the Module Name a title such as “System CA Trust Module”. For the Module filename, paste in
/usr/lib/x86_64-linux-gnu/pkcs11/p11-kit-trust.so and hit
The path to p11-kit-trust.so will be slightly different if your processor’s architecture is not x86_64.
Verify that the new module shows up on the left hand side and select
OK at the bottom right:
No special steps are needed for Arch/Garuda/CentOS/Fedora.
You must use Firefox Beta on Android. The regular Firefox app will not work.
Kebab Menu > Settings > About Firefox and tap the Firefox icon 5 times to enable “developer mode”
Go back to
Kebab Menu > Settings > Secret Settings (at the bottom), and tap
Use third party CA certificates