Salut, Cedric1974.

Ton explication est plutôt vague. Pourrais-tu élaborer un peu plus?

J'essaierai d'aider en traduisant. Je doute qu'il n'y ait beaucoup d'assistants francophones ici.

Bonjour.

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.

See:

• https://support.mozilla.org/kb/Server+not+found
• https://support.mozilla.org/kb/Firewalls

• https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating