3 ms·

Just export the key from a current version and import it into the old version. Worked for me.

• gruez 7y ago
  How do you do this?
  • adjagu 7y ago
    From an updated Firefox navigate to Preferences -> Privacy & Security -> Security -> Certificates -> View Certificates Now find: Mozilla Corporation signingca1.addons.mozilla.org Select signingca1.addons.mozilla.org and then choose export. This is what you would import into the older version of Firefox.
    • ComodoHacker 7y ago
      BTW that certificate list if fairly long, has no scrollbar and no search box. That's a bad UI. Is there a way to report this without spending hours to register at Bugzilla and file a proper bug report?
      • adjagu 7y ago
        Not sure why you don't have a scrollbar. On my version of Firefox (Firefox Developer Edition 67-0b16) the certificate list does have a scroll bar and can be navigated using the mousewheel. Can't speak for stable Firefox since I don't use that version. No, not that I am aware of. In my own experience it actually took me longer to find alternative ways of bringing awareness to a bug I was having than it did to signup to Bugzilla and report it there.