Ce site disposera de fonctionnalités limitées pendant que nous effectuons des opérations de maintenance en vue de vous proposer un meilleur service. Si un article ne règle pas votre problème et que vous souhaitez poser une question, notre communauté d’assistance est prête à vous répondre via @FirefoxSupport sur Twitter, et /r/firefox sur Reddit.

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus

How to make it STOP giving me "Connection Not Secure" screen?

more options

Made the stupid mistake of actually "upgrading" Firefox. Now I can't get rid of the this stupid f**king message "Connect Not Secure...blah, blah, blah" screen appearing all the f**king time!!! How do I get rid of this bulls**t!!!???

 What is it about the concept of JUST_F**KING_WORK that is so difficult for software designers to understand??

I tried "loading the Polish version of Firefox" as some idiot suggested. Didn't work... I tried doing about:config and turning off every and all so-called security option. Didn't work...

How do I get rid of this bulls**t!!!??? How do I get rid of this bulls**t!!!??? How do I get rid of this bulls**t!!!??? How do I get rid of this bulls**t!!!???

Made the stupid mistake of actually "upgrading" Firefox. Now I can't get rid of the this stupid f**king message "Connect Not Secure...blah, blah, blah" screen appearing all the f**king time!!! How do I get rid of this bulls**t!!!??? What is it about the concept of JUST_F**KING_WORK that is so difficult for software designers to understand?? I tried "loading the Polish version of Firefox" as some idiot suggested. Didn't work... I tried doing about:config and turning off every and all so-called security option. Didn't work... How do I get rid of this bulls**t!!!??? How do I get rid of this bulls**t!!!??? How do I get rid of this bulls**t!!!??? How do I get rid of this bulls**t!!!???

Toutes les réponses (1)

more options

Let's get to the bottom of it.

On the error page, click the Advanced button to show more detailed error information. Copy/paste that into a reply.

If you see the code SEC_ERROR_UNKNOWN_ISSUER in that section:

There likely is a "man in the middle." It could be your security software or malware. This article lists common causes: How to troubleshoot security error codes on secure websites.

Anything relevant there? If not, click SEC_ERROR_UNKNOWN_ISSUER to show the code version of the certificate. You can click the copy button and paste that into a reply. I generally use this site to decode the certificate for clues as to its source: https://certlogik.com/decoder/