{"id":10451,"date":"2026-02-04T12:24:22","date_gmt":"2026-02-04T16:24:22","guid":{"rendered":"https:\/\/magiiic.com\/actu\/ajouter-le-certificat-isrg-root-x2-sur-macos-10-13-6\/"},"modified":"2026-02-04T13:22:06","modified_gmt":"2026-02-04T17:22:06","slug":"root-x2","status":"publish","type":"post","link":"https:\/\/magiiic.com\/fr\/help\/root-x2\/","title":{"rendered":"Ajouter le certificat ISRG Root X2 sur macOS 10.13.6"},"content":{"rendered":"\n
\n

Objectif : permettre au Mac de reconna\u00eetre les certificats Let’s Encrypt r\u00e9centsDur\u00e9e : 5 minutesRisque : aucun<\/p>\n<\/blockquote>\n\n

\n\n

1\ufe0f\u20e3 T\u00e9l\u00e9charger le bon certificat<\/h2>\n\n
    \n
  1. Ouvrir Safari<\/strong><\/li>\n\n\n\n
  2. Aller sur le site officiel Let’s Encrypt\ud83d\udc49 https:\/\/letsencrypt.org\/certificates\/<\/a><\/li>\n\n\n\n
  3. Dans la section ISRG Root X2<\/strong><\/li>\n\n\n\n
  4. T\u00e9l\u00e9charger le certificat auto-sign\u00e9 au format .pem<\/code> <\/li>\n<\/ol>\n\n
    ISRG Root X2\nSubject: O = Internet Security Research Group, CN = ISRG Root X2\nKey type: ECDSA P-384\nTrusted until: 2035-09-04 (generated 2020-09-04)\nCA details: crt.sh, issued certs\nCertificate details (self-signed): <\/strong>crt.sh, der, pem<\/mark><\/strong>, txt\n<\/strong>Certificate details (cross-signed by ISRG Root X1): crt.sh, der, pem, txt\nCertificate details (second cross-sign by ISRG Root X1): crt.sh, der, pem, txt\nCRL hostname: x2.c.lencr.org\nTest websites: valid, revoked, expired<\/code><\/pre>\n\n
    \u27a1\ufe0f Le fichier isrg-root-x2.pem<\/strong> se t\u00e9l\u00e9charge normalement le dossier T\u00e9l\u00e9chargements<\/strong><\/p>\n\n
    \n\n
    2\ufe0f\u20e3 Ouvrir le certificat<\/h2>\n\n
      \n
    1. Ouvrir le Finder<\/strong><\/li>\n\n\n\n
    2. Aller dans T\u00e9l\u00e9chargements<\/strong><\/li>\n\n\n\n
    3. Double-cliquer sur le fichier du certificat<\/li>\n<\/ol>\n\n
      \ud83d\udc49 L’application Trousseau d’acc\u00e8s<\/strong> s’ouvre automatiquement<\/p>\n\n
      \n\n
      3\ufe0f\u20e3 V\u00e9rifier o\u00f9 le certificat est ajout\u00e9 (tr\u00e8s important)<\/h2>\n\n
      Dans Trousseau d’acc\u00e8s<\/strong>:<\/p>\n\n
        \n
      1. Dans la colonne de gauche :\n
          \n
        • s\u00e9lectionner Racines du syst\u00e8me<\/strong>\u26a0\ufe0f Pas \u00ab\u00a0session\u00a0\u00bb \/ \u00ab\u00a0login\u00a0\u00bb<\/em><\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • Dans les onglets en haut de la liste, s\u00e9lectionner Certificats<\/strong><\/li>\n\n\n\n
        • Dans la liste, cherchez :ISRG Root X2<\/strong><\/li>\n<\/ol>\n\n
          S’il n’appara\u00eet pas :<\/p>\n\n
            \n
          • le glisser manuellement dans Racines du syst\u00e8me<\/strong><\/li>\n<\/ul>\n\n
            \n\n
            4\ufe0f\u20e3 Forcer la confiance du certificat<\/h2>\n\n
              \n
            1. Double-cliquer sur ISRG Root X2<\/strong><\/li>\n\n\n\n
            2. Une fen\u00eatre s’ouvre<\/li>\n\n\n\n
            3. D\u00e9plier la section Confiance<\/strong> (ou Se fier<\/strong>)<\/li>\n\n\n\n
            4. \u00c0 c\u00f4t\u00e9 de Lors de l\u2019utilisation de ce certificat<\/em> :\n
                \n
              • choisir Toujours faire confiance<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n
              • Fermer la fen\u00eatre<\/li>\n<\/ol>\n\n
                \ud83d\udc49 macOS va demander le mot de passe du Mac<\/strong>(celui pour ouvrir la session)<\/p>\n\n
                \n\n
                5\ufe0f\u20e3 V\u00e9rification rapide<\/h2>\n\n
                Toujours dans Trousseau d’acc\u00e8s<\/strong>:<\/p>\n\n
                  \n
                • Le certificat ne doit pas avoir de croix rouge<\/strong><\/li>\n\n\n\n
                • Il doit \u00eatre marqu\u00e9 comme fiable<\/strong><\/li>\n<\/ul>\n\n
                  \n\n
                  6\ufe0f\u20e3 Red\u00e9marrage (important)<\/h2>\n\n
                    \n
                  1. Quitter Mail<\/strong> et Trousseaux d’acc\u00e8s<\/strong><\/li>\n\n\n\n
                  2. Red\u00e9marrer le Mac<\/li>\n\n\n\n
                  3. Courrier<\/strong> Relancer<\/li>\n\n\n\n
                  4. Attendre quelques secondes<\/li>\n<\/ol>\n\n
                    \ud83d\udc49 Si Mail redemande le mot de passe ou se reconnecte tout seul, c’est bon signe.<\/p>\n\n
                    \n\n
                    \ud83d\udfe2 Ce que \u00e7a corrige<\/h2>\n\n
                      \n
                    • Probl\u00e8mes de connexion Mail (IMAP \/ SMTP)<\/li>\n\n\n\n
                    • Acc\u00e8s \u00e0 certains sites HTTPS r\u00e9cents<\/li>\n\n\n\n
                    • Autres services s\u00e9curis\u00e9s utilisant Let’s Encrypt<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                      Objectif : permettre au Mac de reconna\u00eetre les certificats Let’s Encrypt r\u00e9centsDur\u00e9e : 5 minutesRisque : aucun 1\ufe0f\u20e3 T\u00e9l\u00e9charger le bon certificat \u27a1\ufe0f Le fichier isrg-root-x2.pem se t\u00e9l\u00e9charge normalement le…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[380],"tags":[],"class_list":{"0":"post-10451","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-help"},"_links":{"self":[{"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/posts\/10451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/comments?post=10451"}],"version-history":[{"count":2,"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/posts\/10451\/revisions"}],"predecessor-version":[{"id":10455,"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/posts\/10451\/revisions\/10455"}],"wp:attachment":[{"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/media?parent=10451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/categories?post=10451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/magiiic.com\/fr\/wp-json\/wp\/v2\/tags?post=10451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}