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Unable to access ANY internet page with ONLY firefox

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Hello, help in FRench would be welcome 'cause the faulty Firefox is set in FRench. So, as said : Unable to access ANY internet page with ONLY firefox under Win 10 It says "Attention : risque probable de sécurité" (probable security risk) Since the problem occured : - Firefox has been reinstalled and is up to date (104.0.1 64bits) - Proxy parameter has been set to NO proxy - Sync/Account has been disconnected (and unable to reconnect due to this pb) + Others Windows accounts do NOT have this problem On some servers, I can ACCEPT the RISK and access www but NOT on https://accounts.firefox.com

Code d’erreur : SEC_ERROR_UNKNOWN_ISSUER [Certificat] Nom de l’émetteur Nom courant AdBlocker Ultimate 2 (But this extension is NOT loaded)

Any help is welcome, thanks in advance !

Hello, help in FRench would be welcome 'cause the faulty Firefox is set in FRench. So, as said : Unable to access ANY internet page with ONLY firefox under Win 10 It says "Attention : risque probable de sécurité" (probable security risk) Since the problem occured : - Firefox has been reinstalled and is up to date (104.0.1 64bits) - Proxy parameter has been set to NO proxy - Sync/Account has been disconnected (and unable to reconnect due to this pb) + Others Windows accounts do NOT have this problem On some servers, I can ACCEPT the RISK and access www but NOT on https://accounts.firefox.com Code d’erreur : SEC_ERROR_UNKNOWN_ISSUER [Certificat] Nom de l’émetteur Nom courant AdBlocker Ultimate 2 (But this extension is NOT loaded) Any help is welcome, thanks in advance !

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