Hello, I have been using Firefox for many years and also have Bitdefender Security Premium running on my devices. Unfortunately, I am getting more and more messages like the following: Function: Online threat protection firefox.exe attempted to connect to ads.mozilla.org using an untrusted certificate. We blocked the connection because untrusted certificates are issued by unrecognised certification authorities. However, I can confirm that Firefox and the add-ons are all up to date. But I also trust Bitdefender, as this message will not have come out of nowhere. What can I do to get everything working properly again? Thank you. Kind regards, NaIch Translated with DeepL.com (free version)