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.

Avatar for Username

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

Ce sujet de discussion a été archivé. Veuillez poser une nouvelle question si vous avez besoin d’aide.

No longer shown warning screen with advanced button for self signed certs

  • 1 réponse
  • 0 a ce problème
  • 1 vue
  • Dernière réponse par cor-el

toddpepin
toddpepin
more options

Folks -

I am working with an internal development web site that uses self signed certificates for https / ssl.

Previously when browsing to this site, FF would present me with a web page that said "Warning: Potential Security Threat Ahead", but then also present an "Advanced" button on this page that would allow me to choose to ignore the cert error and proceed to the site anyways.

Recently, I now no longer have the option to proceed to the site anyways. I might have upgraded my DD during that time. We've also generated new certs recently. FF now just shows an "Unable to Connect" error message and there is no "Advanced" button or option to bypass the cert error and proceed to the site. This is on Firefox 91.12.0esr.

FWIW, both Chrome and IE still present me with options to bypass the cert error and proceed to the site.

Possibly FF will allow you to bypass an invalid CA, but not an invalid CN ?

Folks - I am working with an internal development web site that uses self signed certificates for https / ssl. Previously when browsing to this site, FF would present me with a web page that said "Warning: Potential Security Threat Ahead", but then also present an "Advanced" button on this page that would allow me to choose to ignore the cert error and proceed to the site anyways. Recently, I now no longer have the option to proceed to the site anyways. I might have upgraded my DD during that time. We've also generated new certs recently. FF now just shows an "Unable to Connect" error message and there is no "Advanced" button or option to bypass the cert error and proceed to the site. This is on Firefox 91.12.0esr. FWIW, both Chrome and IE still present me with options to bypass the cert error and proceed to the site. Possibly FF will allow you to bypass an invalid CA, but not an invalid CN ?
Captures d’écran jointes

Toutes les réponses (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Do you have older exceptions for those certificates?

Try to rename the cert9.db file (cert9OLD.db) and remove a possible previously used cert8.db file in the Firefox profile folder with Firefox closed to remove intermediate certificates and exceptions that Firefox has cached.

If this has helped to solve the problem then you can remove the renamed cert9OLD.db file. Otherwise you can undo the rename and restore cert9.db.

You can possibly try the next 102 ESR version (Firefox 102.1.0esr) as Firefox 91 ESR is almost EOL to see whether it behaves differently. Use the version selector (Which version would you like?):

Make sure to create a new profile.