Merci, voici ce que tu me demande :
# dnf repolist all
Failed to synchronize cache for repo 'rpmfusion-nonfree-updates-source', désactivation.
Failed to synchronize cache for repo 'rpmfusion-nonfree-updates-testing-debuginfo', désactivation.
Failed to synchronize cache for repo 'rpmfusion-free-updates-testing-source', désactivation.
Failed to synchronize cache for repo 'rpmfusion-free-updates-testing-debuginfo', désactivation.
Failed to synchronize cache for repo 'rpmfusion-nonfree-updates-testing-source', désactivation.
Failed to synchronize cache for repo 'rpmfusion-nonfree-updates', désactivation.
Failed to synchronize cache for repo 'rpmfusion-free-updates-debuginfo', désactivation.
Failed to synchronize cache for repo 'rpmfusion-nonfree-updates-debuginfo', désactivation.
Failed to synchronize cache for repo 'rpmfusion-free-updates', désactivation.
Failed to synchronize cache for repo 'rpmfusion-free-updates-source', désactivation.
Vérification de l'expiration des métadonnées effectuée il y a 0:45:40 sur Sun Nov 6 16:15:07 2016.
id du dépôt nom du dépôt statut
adobe-linux-x86_64 Adobe Systems Incorpo activé: 2
*fedora Fedora 25 - x86_64 activé: 51 673
fedora-cisco-openh264 Fedora 25 openh264 (F désactivé
fedora-cisco-openh264-debuginfo Fedora 25 openh264 (F désactivé
fedora-debuginfo Fedora 25 - x86_64 - désactivé
fedora-source Fedora 25 - Source désactivé
rpmfusion-free RPM Fusion for Fedora activé: 563
rpmfusion-free-debuginfo RPM Fusion for Fedora activé: 189
rpmfusion-free-rawhide RPM Fusion for Fedora activé: 559
rpmfusion-free-rawhide-debuginfo RPM Fusion for Fedora activé: 188
rpmfusion-free-rawhide-source RPM Fusion for Fedora activé: 228
rpmfusion-free-source RPM Fusion for Fedora activé: 229
rpmfusion-free-updates RPM Fusion for Fedora désactivé
rpmfusion-free-updates-debuginfo RPM Fusion for Fedora désactivé
rpmfusion-free-updates-source RPM Fusion for Fedora désactivé
rpmfusion-free-updates-testing RPM Fusion for Fedora activé: 0
rpmfusion-free-updates-testing-debuginfo RPM Fusion for Fedora désactivé
rpmfusion-free-updates-testing-source RPM Fusion for Fedora désactivé
rpmfusion-nonfree RPM Fusion for Fedora activé: 198
rpmfusion-nonfree-debuginfo RPM Fusion for Fedora activé: 54
rpmfusion-nonfree-rawhide RPM Fusion for Fedora activé: 181
rpmfusion-nonfree-rawhide-debuginfo RPM Fusion for Fedora activé: 54
rpmfusion-nonfree-rawhide-source RPM Fusion for Fedora activé: 87
rpmfusion-nonfree-source RPM Fusion for Fedora activé: 91
rpmfusion-nonfree-updates RPM Fusion for Fedora désactivé
rpmfusion-nonfree-updates-debuginfo RPM Fusion for Fedora désactivé
rpmfusion-nonfree-updates-source RPM Fusion for Fedora désactivé
rpmfusion-nonfree-updates-testing RPM Fusion for Fedora activé: 0
rpmfusion-nonfree-updates-testing-debuginfo RPM Fusion for Fedora désactivé
rpmfusion-nonfree-updates-testing-source RPM Fusion for Fedora désactivé
*updates Fedora 25 - x86_64 - activé: 0
updates-debuginfo Fedora 25 - x86_64 - désactivé
updates-source Fedora 25 - Updates S désactivé
updates-testing Fedora 25 - x86_64 - désactivé
updates-testing-debuginfo Fedora 25 - x86_64 - désactivé
updates-testing-source Fedora 25 - Test Upda désactivé
J'ai l'impression que c'est au début avec les "Failed to synchronize cache for repo " ... est-ce que je me trompe ?