{"id":3731,"date":"2024-09-10T00:24:04","date_gmt":"2024-09-10T00:24:04","guid":{"rendered":"https:\/\/zynoo.com\/blog\/dns-server-not-responding\/"},"modified":"2026-10-27T17:13:47","modified_gmt":"2026-10-27T17:13:47","slug":"dns-server-not-responding","status":"publish","type":"post","link":"https:\/\/zynoo.com\/blog\/fr\/dns-server-not-responding\/","title":{"rendered":"Le serveur DNS ne r\u00e9pond pas ? 7 solutions"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" id=\"h-\">L\u2019erreur <strong>Le serveur DNS ne r\u00e9pond pas<\/strong> appara\u00eet lorsque votre appareil n\u2019obtient pas de r\u00e9ponse du serveur DNS charg\u00e9 de r\u00e9soudre les adresses des sites web. Vous pouvez toujours \u00eatre connect\u00e9 au Wi-Fi, mais les sites refusent de se charger parce que votre ordinateur ne parvient pas \u00e0 trouver leurs adresses IP.<\/p>\n\n<p class=\"wp-block-paragraph\">Le probl\u00e8me peut provenir de votre routeur, de votre fournisseur d\u2019acc\u00e8s \u00e0 Internet (FAI), de param\u00e8tres DNS incorrects ou d\u2019un logiciel qui interf\u00e8re avec les requ\u00eates r\u00e9seau.<\/p>\n\n<p class=\"wp-block-paragraph\">Heureusement, la plupart des probl\u00e8mes de connexion DNS peuvent \u00eatre diagnostiqu\u00e9s sans connaissances techniques avanc\u00e9es. Voici sept solutions pratiques pour Windows et macOS.<\/p>\n\n<h2 id=\"h-what-does-dns-server-not-responding-mean\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Que_signifie_%C2%AB_Le_serveur_DNS_ne_repond_pas_%C2%BB\"><\/span>Que signifie \u00ab Le serveur DNS ne r\u00e9pond pas \u00bb ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Le syst\u00e8me de noms de domaine (DNS) traduit les noms de sites web, tels que <code>google.com<\/code>, en adresses IP que les ordinateurs utilisent pour \u00e9tablir des connexions.<\/p>\n\n<p class=\"wp-block-paragraph\">Lorsque vous saisissez l\u2019adresse d\u2019un site web, votre appareil demande \u00e0 un r\u00e9solveur DNS de trouver l\u2019adresse IP correspondante.<\/p>\n\n<p class=\"wp-block-paragraph\">Si le r\u00e9solveur ne r\u00e9pond pas dans le d\u00e9lai pr\u00e9vu, votre navigateur ou votre syst\u00e8me d\u2019exploitation peut signaler une erreur DNS.<\/p>\n\n<p class=\"wp-block-paragraph\">Les causes courantes comprennent :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Un r\u00e9solveur DNS indisponible ou surcharg\u00e9.<\/li>\n\n\n\n<li>Des probl\u00e8mes de routeur ou de connexion Internet.<\/li>\n\n\n\n<li>Une configuration DNS incorrecte.<\/li>\n\n\n\n<li>Des informations DNS obsol\u00e8tes conserv\u00e9es dans le cache local.<\/li>\n\n\n\n<li>Des interf\u00e9rences caus\u00e9es par un VPN, un proxy ou un logiciel de s\u00e9curit\u00e9.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><strong>La distinction importante :<\/strong> un serveur DNS qui ne r\u00e9pond pas est un probl\u00e8me diff\u00e9rent d\u2019un nom de domaine inexistant. D\u00e9terminer lequel vous rencontrez vous \u00e9vite d\u2019appliquer des solutions inutiles.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/09\/DNS-Server-Not-responding-1-1024x576.webp\" alt=\"Le serveur DNS ne r\u00e9pond pas\" class=\"wp-image-3717\" srcset=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/09\/DNS-Server-Not-responding-1-1024x576.webp 1024w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/09\/DNS-Server-Not-responding-1-300x169.webp 300w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/09\/DNS-Server-Not-responding-1-768x432.webp 768w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/09\/DNS-Server-Not-responding-1-1536x864.webp 1536w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2024\/09\/DNS-Server-Not-responding-1.webp 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h2 id=\"h-how-to-fix-dns-server-not-responding\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Comment_resoudre_lerreur_%C2%AB_Le_serveur_DNS_ne_repond_pas_%C2%BB\"><\/span>Comment r\u00e9soudre l\u2019erreur \u00ab Le serveur DNS ne r\u00e9pond pas \u00bb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Commencez par les v\u00e9rifications les plus simples avant de modifier les param\u00e8tres r\u00e9seau.<\/p>\n\n<h3 id=\"h-1-check-your-internet-connection\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Verifiez_votre_connexion_Internet\"><\/span>1. V\u00e9rifiez votre connexion Internet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">D\u00e9terminez d\u2019abord si le probl\u00e8me touche un seul site web ou l\u2019ensemble de votre connexion Internet.<\/p>\n\n<p class=\"wp-block-paragraph\">Essayez d\u2019ouvrir plusieurs sites web connus. Si aucun ne se charge, testez la connexion sur un autre appareil.<\/p>\n\n<p class=\"wp-block-paragraph\">Vous pouvez \u00e9galement connecter votre ordinateur \u00e0 un autre r\u00e9seau, comme un point d\u2019acc\u00e8s mobile.<\/p>\n\n<p class=\"wp-block-paragraph\">Ces tests fournissent des indices utiles :<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Tous les appareils sont concern\u00e9s :<\/strong> le routeur, le FAI ou le r\u00e9solveur DNS configur\u00e9 peut \u00eatre en cause.<\/li>\n\n\n\n<li><strong>Un seul appareil est concern\u00e9 :<\/strong> v\u00e9rifiez ses param\u00e8tres DNS et r\u00e9seau.<\/li>\n\n\n\n<li><strong>Un seul site web est concern\u00e9 :<\/strong> la configuration DNS du domaine peut \u00eatre incorrecte.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Si votre connexion Internet fonctionne normalement sur un autre r\u00e9seau, concentrez-vous sur le r\u00e9seau d\u2019origine avant de modifier les param\u00e8tres de votre ordinateur.<\/p>\n\n<h3 id=\"h-2-restart-your-router-and-computer\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Redemarrez_votre_routeur_et_votre_ordinateur\"><\/span>2. Red\u00e9marrez votre routeur et votre ordinateur<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Des probl\u00e8mes temporaires de <a href=\"https:\/\/en.wikipedia.org\/wiki\/Router_(computing)\">routeur<\/a> ou de r\u00e9seau peuvent parfois interrompre les communications DNS.<\/p>\n\n<p class=\"wp-block-paragraph\">Essayez ce red\u00e9marrage simple :<\/p>\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u00c9teignez votre routeur et votre modem, s\u2019il s\u2019agit de deux appareils distincts.<\/li>\n\n\n\n<li>Attendez environ 30 secondes.<\/li>\n\n\n\n<li>Rebranchez-les et laissez le r\u00e9seau se r\u00e9tablir.<\/li>\n\n\n\n<li>Red\u00e9marrez votre ordinateur et testez \u00e0 nouveau le site web.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\">Vous pouvez aussi vous d\u00e9connecter du Wi-Fi, puis vous y reconnecter.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>N\u2019utilisez pas le bouton de r\u00e9initialisation d\u2019usine de votre routeur.<\/strong> Un red\u00e9marrage normal suffit pour ce test et n\u2019effacera pas votre configuration r\u00e9seau enregistr\u00e9e.<\/p>\n\n<h3 id=\"h-3-test-your-dns-server-with-nslookup\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Testez_votre_serveur_DNS_avec_nslookup\"><\/span>3. Testez votre serveur DNS avec nslookup<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Avant de changer de fournisseur DNS, v\u00e9rifiez si le r\u00e9solveur configur\u00e9 r\u00e9pond aux requ\u00eates.<\/p>\n\n<p class=\"wp-block-paragraph\">Sous Windows, ouvrez l\u2019Invite de commandes ou PowerShell et ex\u00e9cutez :<\/p>\n\n<pre class=\"wp-block-code\"><code><code>nslookup google.com<\/code><\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Cette commande demande au r\u00e9solveur DNS configur\u00e9 de rechercher l\u2019adresse IP de Google.<\/p>\n\n<p class=\"wp-block-paragraph\">Comparez ensuite le r\u00e9sultat \u00e0 l\u2019aide du r\u00e9solveur public de Cloudflare :<\/p>\n\n<pre class=\"wp-block-code\"><code><code>nslookup google.com 1.1.1.1<\/code><\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Si la premi\u00e8re commande expire mais que la seconde r\u00e9ussit, votre r\u00e9solveur DNS actuel ou le chemin r\u00e9seau qui y m\u00e8ne peut rencontrer des probl\u00e8mes.<\/p>\n\n<p class=\"wp-block-paragraph\">Si les deux \u00e9chouent, examinez votre connexion Internet, votre pare-feu ou les restrictions du r\u00e9seau.<\/p>\n\n<p class=\"wp-block-paragraph\">Si la r\u00e9ponse indique que le domaine n\u2019existe pas, il s\u2019agit d\u2019un autre probl\u00e8me DNS qu\u2019une expiration du d\u00e9lai d\u2019attente.<\/p>\n\n<p class=\"wp-block-paragraph\">La commande <code>nslookup<\/code> est \u00e9galement utile aux administrateurs de sites web qui doivent v\u00e9rifier les enregistrements DNS.<\/p>\n\n<h3 id=\"h-4-flush-your-dns-cache\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Videz_votre_cache_DNS\"><\/span>4. Videz votre cache DNS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Votre ordinateur stocke temporairement les r\u00e9sultats des recherches DNS pour acc\u00e9l\u00e9rer les requ\u00eates suivantes.<\/p>\n\n<p class=\"wp-block-paragraph\">Parfois, des informations obsol\u00e8tes conserv\u00e9es dans le cache contribuent aux probl\u00e8mes de connexion.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Sous Windows :<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Ouvrez l\u2019Invite de commandes et ex\u00e9cutez :<\/p>\n\n<pre class=\"wp-block-code\"><code><code>ipconfig \/flushdns<\/code><\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Windows devrait confirmer que le cache du r\u00e9solveur DNS a \u00e9t\u00e9 vid\u00e9.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Sous macOS :<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Ouvrez le Terminal et ex\u00e9cutez :<\/p>\n\n<pre class=\"wp-block-code\"><code><code>sudo dscacheutil -flushcache<\/code><\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Puis :<\/p>\n\n<pre class=\"wp-block-code\"><code><code>sudo killall -HUP mDNSResponder<\/code><\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Saisissez votre mot de passe administrateur si vous y \u00eates invit\u00e9.<\/p>\n\n<p class=\"wp-block-paragraph\">Rouvrez ensuite votre navigateur et testez le site web.<\/p>\n\n<p class=\"wp-block-paragraph\">Vider votre cache DNS est g\u00e9n\u00e9ralement sans danger, mais cela ne r\u00e9soudra pas le probl\u00e8me d\u2019un serveur DNS en amont indisponible ni celui d\u2019enregistrements incorrects sur les serveurs de noms du propri\u00e9taire du site.<\/p>\n\n<h3 id=\"h-5-change-your-dns-server\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Changez_de_serveur_DNS\"><\/span>5. Changez de serveur DNS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Si votre r\u00e9solveur DNS actuel est indisponible, passer \u00e0 un service DNS public fiable peut r\u00e9tablir l\u2019acc\u00e8s aux sites web.<\/p>\n\n<p class=\"wp-block-paragraph\">Voici deux options couramment utilis\u00e9es :<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Fournisseur<\/th><th>DNS principal<\/th><th>DNS secondaire<\/th><\/tr><tr><td>Cloudflare<\/td><td><code>1.1.1.1<\/code><\/td><td><code>1.0.0.1<\/code><\/td><\/tr><tr><td>Google Public DNS<\/td><td><code>8.8.8.8<\/code><\/td><td><code>8.8.4.4<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h4 id=\"h-change-dns-on-windows-11\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Modifier_les_parametres_DNS_sous_Windows_11\"><\/span>Modifier les param\u00e8tres DNS sous Windows 11<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Ouvrez <strong>Param\u00e8tres \u2192 R\u00e9seau et Internet<\/strong>.<\/li>\n\n\n\n<li>S\u00e9lectionnez votre connexion Wi-Fi ou Ethernet active.<\/li>\n\n\n\n<li>Rep\u00e9rez <strong>Attribution du serveur DNS<\/strong> et cliquez sur <strong>Modifier<\/strong>.<\/li>\n\n\n\n<li>Passez le param\u00e8tre d\u2019Automatique \u00e0 Manuel.<\/li>\n\n\n\n<li>Activez IPv4 et saisissez les adresses DNS pr\u00e9f\u00e9r\u00e9e et secondaire.<\/li>\n\n\n\n<li>Enregistrez les modifications et testez votre connexion.<\/li>\n<\/ol>\n\n<h4 id=\"h-change-dns-on-macos\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Modifier_les_parametres_DNS_sous_macOS\"><\/span>Modifier les param\u00e8tres DNS sous macOS<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Ouvrez <strong>R\u00e9glages Syst\u00e8me \u2192 R\u00e9seau<\/strong>.<\/li>\n\n\n\n<li>S\u00e9lectionnez votre connexion r\u00e9seau active.<\/li>\n\n\n\n<li>Cliquez sur <strong>D\u00e9tails \u2192 DNS<\/strong>.<\/li>\n\n\n\n<li>Ajoutez les adresses de vos serveurs DNS pr\u00e9f\u00e9r\u00e9s.<\/li>\n\n\n\n<li>Appliquez les modifications et testez \u00e0 nouveau le site web.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\">Notez vos param\u00e8tres pr\u00e9c\u00e9dents afin de pouvoir les r\u00e9tablir si n\u00e9cessaire.<\/p>\n\n<p class=\"wp-block-paragraph\">Si votre appareil appartient \u00e0 une entreprise ou \u00e0 un \u00e9tablissement scolaire, contactez l\u2019administrateur r\u00e9seau avant de modifier les param\u00e8tres DNS. Les r\u00e9solveurs publics peuvent ne pas fonctionner avec les domaines internes priv\u00e9s.<\/p>\n\n<h3 id=\"h-6-check-vpn-proxy-and-security-software\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Verifiez_le_VPN_le_proxy_et_les_logiciels_de_securite\"><\/span>6. V\u00e9rifiez le VPN, le proxy et les logiciels de s\u00e9curit\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Les services VPN, les configurations de proxy et les applications de s\u00e9curit\u00e9 peuvent affecter la r\u00e9solution DNS.<\/p>\n\n<p class=\"wp-block-paragraph\">Par exemple, un VPN peut utiliser ses propres serveurs DNS. Si cette connexion devient indisponible, les recherches d\u2019adresses de sites web peuvent \u00e9chouer.<\/p>\n\n<p class=\"wp-block-paragraph\">V\u00e9rifiez si :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Votre connexion VPN fonctionne correctement.<\/li>\n\n\n\n<li>Votre appareil pr\u00e9sente une configuration de proxy inattendue.<\/li>\n\n\n\n<li>Les journaux de vos logiciels de s\u00e9curit\u00e9 indiquent que des requ\u00eates DNS sont bloqu\u00e9es.<\/li>\n\n\n\n<li>Les param\u00e8tres de DNS s\u00e9curis\u00e9 du navigateur entrent en conflit avec votre configuration r\u00e9seau.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Si vous utilisez un VPN personnel, testez un autre emplacement VPN autoris\u00e9 ou reconnectez le service.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>\u00c9vitez de d\u00e9sactiver votre pare-feu ou votre protection antivirus.<\/strong> Examinez plut\u00f4t les r\u00e8gles de blocage et les journaux de diagnostic.<\/p>\n\n<p class=\"wp-block-paragraph\">Sur les appareils administr\u00e9s, consultez votre administrateur avant de modifier les param\u00e8tres du VPN, du proxy ou de s\u00e9curit\u00e9.<\/p>\n\n<h3 id=\"h-7-update-network-software-or-contact-your-isp\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Mettez_a_jour_les_logiciels_reseau_ou_contactez_votre_FAI\"><\/span>7. Mettez \u00e0 jour les logiciels r\u00e9seau ou contactez votre FAI<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Si l\u2019erreur persiste, recherchez les mises \u00e0 jour du syst\u00e8me d\u2019exploitation et d\u2019\u00e9ventuels probl\u00e8mes li\u00e9s \u00e0 la carte r\u00e9seau.<\/p>\n\n<p class=\"wp-block-paragraph\">Sous Windows, vous pouvez lancer l\u2019utilitaire de r\u00e9solution des probl\u00e8mes r\u00e9seau int\u00e9gr\u00e9 et v\u00e9rifier les mises \u00e0 jour de la carte r\u00e9seau dans le Gestionnaire de p\u00e9riph\u00e9riques.<\/p>\n\n<p class=\"wp-block-paragraph\">Vous pouvez \u00e9galement v\u00e9rifier les serveurs DNS configur\u00e9s \u00e0 l\u2019aide de :<\/p>\n\n<pre class=\"wp-block-code\"><code><code>ipconfig \/all<\/code><\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Rep\u00e9rez les entr\u00e9es des serveurs DNS associ\u00e9es \u00e0 votre carte r\u00e9seau active.<\/p>\n\n<p class=\"wp-block-paragraph\">Si plusieurs appareils rencontrent le probl\u00e8me et que les r\u00e9solveurs DNS publics sont \u00e9galement inaccessibles, votre FAI devra peut-\u00eatre mener une enqu\u00eate.<\/p>\n\n<p class=\"wp-block-paragraph\">Lorsque vous contactez l\u2019assistance, pr\u00e9cisez quels sites web ne fonctionnent pas, quels appareils sont concern\u00e9s et si la connexion fonctionne en passant par un autre r\u00e9seau.<\/p>\n\n<p class=\"wp-block-paragraph\">Ces renseignements peuvent aider \u00e0 identifier le probl\u00e8me plus rapidement.<\/p>\n\n<h2 id=\"h-what-if-you-own-the-website\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Et_si_vous_etes_proprietaire_du_site_web\"><\/span>Et si vous \u00eates propri\u00e9taire du site web ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Si des visiteurs signalent des erreurs DNS pour un domaine que vous g\u00e9rez, le probl\u00e8me peut provenir de la configuration de votre domaine plut\u00f4t que de leurs ordinateurs.<\/p>\n\n<p class=\"wp-block-paragraph\">V\u00e9rifiez les points suivants :<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Enregistrement du domaine :<\/strong> assurez-vous que votre domaine n\u2019a pas expir\u00e9.<\/li>\n\n\n\n<li><strong>Serveurs de noms :<\/strong> assurez-vous que votre bureau d\u2019enregistrement pointe vers les bons serveurs DNS faisant autorit\u00e9.<\/li>\n\n\n\n<li><strong>Enregistrements DNS :<\/strong> v\u00e9rifiez les enregistrements A, AAAA ou CNAME n\u00e9cessaires.<\/li>\n\n\n\n<li><strong>DNSSEC :<\/strong> recherchez une \u00e9ventuelle erreur de configuration DNSSEC apr\u00e8s un changement de fournisseur DNS.<\/li>\n\n\n\n<li><strong>Modifications r\u00e9centes :<\/strong> laissez aux r\u00e9ponses DNS en cache le temps d\u2019expirer.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Vous pouvez utiliser <code>nslookup<\/code> ou un outil de recherche DNS en ligne pour comparer les r\u00e9sultats de plusieurs r\u00e9solveurs.<\/p>\n\n<p class=\"wp-block-paragraph\">Si votre domaine utilise Cloudflare, consultez son tableau de bord DNS et confirmez que les enregistrements n\u00e9cessaires sont pr\u00e9sents.<\/p>\n\n<h2 id=\"h-dns-server-not-responding-vs-other-connection-errors\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Le_serveur_DNS_ne_repond_pas_quelle_difference_avec_les_autres_erreurs_de_connexion\"><\/span>Le serveur DNS ne r\u00e9pond pas : quelle diff\u00e9rence avec les autres erreurs de connexion ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Diff\u00e9rentes erreurs de connexion peuvent se ressembler, mais n\u00e9cessitent des solutions diff\u00e9rentes.<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Erreur<\/th><th>Signification<\/th><\/tr><tr><td>Le serveur DNS ne r\u00e9pond pas<\/td><td>Un r\u00e9solveur DNS configur\u00e9 ne r\u00e9pond pas aux requ\u00eates<\/td><\/tr><tr><td>DNS_PROBE_FINISHED_NXDOMAIN<\/td><td>La r\u00e9solution DNS indique que le domaine demand\u00e9 n\u2019existe pas<\/td><\/tr><tr><td>ERR_CONNECTION_RESET<\/td><td>Une connexion r\u00e9seau \u00e9tablie ou en cours d\u2019\u00e9tablissement a \u00e9t\u00e9 r\u00e9initialis\u00e9e de mani\u00e8re inattendue<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\"><strong>Si votre navigateur signale une r\u00e9initialisation de la connexion plut\u00f4t qu\u2019un \u00e9chec de recherche DNS<\/strong>, consultez plut\u00f4t notre <a href=\"https:\/\/zynoo.com\/blog\/fr\/err-connection-reset\/\">guide de d\u00e9pannage de l\u2019erreur ERR_CONNECTION_RESET<\/a>.<\/p>\n<\/div>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\"><strong>Si votre site web affiche une erreur de s\u00e9curit\u00e9 HTTPS plut\u00f4t qu\u2019un probl\u00e8me DNS<\/strong>, notre <a href=\"https:\/\/zynoo.com\/blog\/fr\/err-ssl-version-or-cipher-mismatch\/\">guide de d\u00e9pannage de l\u2019erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/a> explique comment identifier et r\u00e9soudre les probl\u00e8mes li\u00e9s aux certificats SSL, au protocole TLS et \u00e0 la compatibilit\u00e9 du chiffrement.<\/p>\n<\/div>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\"><br \/><strong>Vous rencontrez des erreurs DNS lorsque vous acc\u00e9dez \u00e0 un site web ?<\/strong> Consultez notre guide sur <a href=\"https:\/\/zynoo.com\/blog\/fr\/dns-probe-finished-nxdomain\/?utm_source=chatgpt.com\">la r\u00e9solution de l\u2019erreur DNS_PROBE_FINISHED_NXDOMAIN<\/a> pour r\u00e9soudre les probl\u00e8mes de r\u00e9solution des noms de domaine et retrouver l\u2019acc\u00e8s \u00e0 Internet.<\/p>\n<\/div>\n\n<h2 id=\"h-frequently-asked-questions\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Questions_frequentes\"><\/span>Questions fr\u00e9quentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1793117497209\"><strong class=\"schema-faq-question\">Pourquoi mon serveur DNS ne r\u00e9pond-il pas ?<\/strong> <p class=\"schema-faq-answer\">Les causes courantes comprennent les probl\u00e8mes de connexion Internet, les r\u00e9solveurs DNS indisponibles, les param\u00e8tres r\u00e9seau incorrects ou les interf\u00e9rences caus\u00e9es par un VPN ou un logiciel de s\u00e9curit\u00e9.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793117523414\"><strong class=\"schema-faq-question\">L\u2019utilisation des DNS de Cloudflare ou de Google est-elle s\u00fbre ?<\/strong> <p class=\"schema-faq-answer\">Ce sont tous deux des services de r\u00e9solution DNS publics reconnus. Toutefois, leurs politiques de confidentialit\u00e9 diff\u00e8rent, et changer de fournisseur peut avoir une incidence sur le filtrage ou les services du r\u00e9seau interne.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793117538393\"><strong class=\"schema-faq-question\">Le red\u00e9marrage de mon routeur r\u00e9soudra-t-il les probl\u00e8mes DNS ?<\/strong> <p class=\"schema-faq-answer\">Cela peut r\u00e9soudre des probl\u00e8mes temporaires de routeur et de connexion. En revanche, un red\u00e9marrage ne corrigera pas des enregistrements de domaine incorrects ni une panne persistante chez votre FAI.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793117547882\"><strong class=\"schema-faq-question\">Vider le cache DNS acc\u00e9l\u00e8re-t-il ma connexion Internet ?<\/strong> <p class=\"schema-faq-answer\">Pas n\u00e9cessairement. Vider le cache DNS supprime les r\u00e9sultats de recherche enregistr\u00e9s. Il s\u2019agit avant tout d\u2019une \u00e9tape de d\u00e9pannage, et non d\u2019un moyen garanti d\u2019acc\u00e9l\u00e9rer votre connexion Internet.<\/p> <\/div> <\/div>\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">L\u2019erreur \u00ab Le serveur DNS ne r\u00e9pond pas \u00bb ne signifie pas n\u00e9cessairement que votre connexion Internet est compl\u00e8tement interrompue. Elle indique souvent un probl\u00e8me de communication entre votre appareil et son r\u00e9solveur DNS.<\/p>\n\n<p class=\"wp-block-paragraph\">Commencez par v\u00e9rifier votre connexion et red\u00e9marrer vos \u00e9quipements r\u00e9seau. Si le probl\u00e8me persiste, testez votre r\u00e9solveur, videz le cache DNS et v\u00e9rifiez vos param\u00e8tres DNS.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>La meilleure approche consiste \u00e0 d\u00e9terminer \u00e0 quel niveau la r\u00e9solution DNS \u00e9choue avant de modifier votre configuration r\u00e9seau.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019erreur Le serveur DNS ne r\u00e9pond pas appara\u00eet lorsque votre appareil n\u2019obtient pas de r\u00e9ponse du serveur DNS charg\u00e9 de r\u00e9soudre les adresses des sites web. Vous pouvez toujours \u00eatre connect\u00e9 au Wi-Fi, mais les sites refusent de se charger parce que votre ordinateur ne parvient pas \u00e0 trouver leurs adresses IP. Le probl\u00e8me peut [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3734,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[256],"tags":[267,631,632],"class_list":["post-3731","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hebergement-web","tag-comment","tag-serveur-dns","tag-serveur-dns-qui-ne-repond-pas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Le serveur DNS ne r\u00e9pond pas ? 7 solutions<\/title>\n<meta name=\"description\" content=\"Le serveur DNS ne r\u00e9pond pas : ce message indique que votre ordinateur ne parvient pas \u00e0 se connecter \u00e0 Internet. 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