{"id":153393,"date":"2025-12-09T10:49:48","date_gmt":"2025-12-09T10:49:48","guid":{"rendered":"https:\/\/www.bluehost.com\/blog\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/"},"modified":"2025-10-14T08:53:19","modified_gmt":"2025-10-14T08:53:19","slug":"quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier","status":"publish","type":"post","link":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/","title":{"rendered":"Qu\u2019est-ce qu\u2019une erreur 401 ? Causes les plus courantes et comment y rem\u00e9dier"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\" id=\"h-key-highlights\">Key highlights<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Understand what a 401 error means and how it impacts access to your WordPress site.\u00a0<\/li>\n\n\n\n<li>Learn the most common causes of 401 errors, from expired cookies to plugin conflicts.\u00a0<\/li>\n\n\n\n<li>Explore step-by-step solutions to troubleshoot and fix the error on your own.\u00a0<\/li>\n\n\n\n<li>Know when it\u2019s time to contact your hosting provider for expert support.\u00a0<\/li>\n\n\n\n<li>Uncover preventative tips to reduce the chances of future 401 errors.\u00a0<\/li>\n<\/ul>\n\n<p>Rencontrer une erreur 401 sur votre site Web WordPress peut \u00eatre assez frustrant. Le rechargement de la page peut aider, mais pas toujours.   <\/p>\n\n<p>Alors, qu\u2019est-ce qu\u2019un code de r\u00e9ponse 401 Hypertext Transfer Protocol (HTTP) et qu\u2019est-ce que cela signifie ?  <\/p>\n\n<p>Un probl\u00e8me de navigateur peut \u00eatre \u00e0 l\u2019origine de cette erreur, mais dans de rares cas, il peut \u00e9galement s\u2019agir d\u2019un probl\u00e8me c\u00f4t\u00e9 serveur.  <\/p>\n\n<p>La bonne nouvelle, c\u2019est que les codes d\u2019erreur 401 sont souvent simples \u00e0 corriger. En fait, une fois que vous aurez identifi\u00e9 la source de l\u2019erreur, vous pourrez peut-\u00eatre la corriger vous-m\u00eame. Vous pouvez \u00e9galement contacter un expert WordPress ou <a href=\"https:\/\/www.bluehost.com\/contact\">l\u2019\u00e9quipe d\u2019assistance \u00e0 la client\u00e8le de votre h\u00e9bergeur<\/a> pour r\u00e9soudre le probl\u00e8me.    <\/p>\n\n<p>Keep reading to learn the causes of 401 errors and how to troubleshoot and prevent them.\u00a0\u00a0Many users ask what is 401 error code because it often appears without much context, leaving them unsure if the problem is on their end or the server\u2019s side.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-a-401-error\">Qu\u2019est-ce qu\u2019une erreur 401 ?<\/h2>\n\n<p>Error 401 is an HTTP status code that indicates your client (or browser) doesn&rsquo;t have the required permissions to access a particular online resource or webpage due to invalid authentication. This standard response code may also show when your browser fails to give valid credentials when attempting to access a requested resource.<\/p>\n\n<p>Cette erreur est souvent le r\u00e9sultat direct d\u2019un probl\u00e8me c\u00f4t\u00e9 client. Cela signifie qu\u2019il y a eu une mauvaise requ\u00eate de votre navigateur au serveur sans authentification appropri\u00e9e.   <\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1598\" height=\"1015\" src=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page.jpg\" alt=\"Exemple de page d&#x2019;erreur 401.\" class=\"wp-image-45241\" srcset=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page.jpg 1598w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-300x191.jpg 300w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-1024x650.jpg 1024w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-768x488.jpg 768w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-1536x976.jpg 1536w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-24x15.jpg 24w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-36x23.jpg 36w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Sample-Error-401-page-48x30.jpg 48w\" sizes=\"100vw\" \/><\/figure>\n\n<p>Lorsque votre navigateur g\u00e9n\u00e8re cette erreur, cela peut r\u00e9sulter d\u2019une tentative d\u2019acc\u00e8s \u00e0 un site Web \u00e0 l\u2019aide d\u2019une URL non valide, d\u2019un nom d\u2019utilisateur ou d\u2019un mot de passe incorrect ou d\u2019un cache de navigateur expir\u00e9.<\/p>\n\n<p>La plupart du temps, la correction des erreurs c\u00f4t\u00e9 client peut r\u00e9soudre le probl\u00e8me rapidement. Dans d\u2019autres cas, le probl\u00e8me peut se produire du c\u00f4t\u00e9 du serveur, lorsque le serveur Web bloque les tentatives valides du client d\u2019acc\u00e9der \u00e0 une ressource demand\u00e9e.   <\/p>\n\n<p>Cela peut r\u00e9sulter de modifications d\u00e9lib\u00e9r\u00e9es apport\u00e9es par un utilisateur au serveur ou d\u2019un \u00e9chec accidentel de la proc\u00e9dure d\u2019authentification.<\/p>\n\n<p>Lorsque vous rencontrez ce probl\u00e8me, votre navigateur affichera un message d\u2019erreur. Diff\u00e9rentes plateformes donnent des titres diff\u00e9rents \u00e0 l\u2019erreur 401. Voici des exemples de ce que vous pouvez voir :  <\/p>\n\n<ul class=\"wp-block-list\">\n<li>401 authorization required<\/li>\n\n\n\n<li>401 unauthorized error<\/li>\n\n\n\n<li>Error 401 unauthorized<\/li>\n\n\n\n<li>HTTP error 401 \u2013 unauthorized<\/li>\n\n\n\n<li>HTTP 401<\/li>\n\n\n\n<li>Access denied<\/li>\n<\/ul>\n\n<p>The error code is the most crucial factor here, not the text variations around it. No matter what your browser displays, the error code tells you the problem you&rsquo;re facing. It&rsquo;s also the key to your solution.\u00a0<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-causes-of-401-errors-on-a-wordpress-website-nbsp\">What are the causes of 401 errors on a WordPress website?\u00a0<\/h2>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes.png\" alt=\"Les causes courantes des erreurs 401 sur les sites Web WordPress.\" class=\"wp-image-45240\" srcset=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes.png 1920w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-300x169.png 300w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-1024x576.png 1024w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-768x432.png 768w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-1536x864.png 1536w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-24x14.png 24w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-36x20.png 36w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/401-error-common-causes-48x27.png 48w\" sizes=\"100vw\" \/><\/figure>\n\n<p>Avant d\u2019explorer les correctifs potentiels, examinons plus en d\u00e9tail pourquoi votre site Web WordPress peut lancer le code d\u2019erreur 401.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-1-incorrect-urls\">1. Incorrect URLs<\/h3>\n\n<p>Tout le monde est coupable d\u2019une faute de frappe occasionnelle. Taper la mauvaise URL (Uniform Resource Locator) dans la barre d\u2019adresse peut causer des probl\u00e8mes, allant d\u2019une mauvaise direction \u00e0 des erreurs 401.   <\/p>\n\n<p>Que faire si l\u2019URL est correcte ? Peut-\u00eatre que la page a \u00e9t\u00e9 d\u00e9plac\u00e9e ou supprim\u00e9e et que vous tentez d\u2019acc\u00e9der \u00e0 une page obsol\u00e8te.   <\/p>\n\n<p>Dans les deux cas, le serveur peut rejeter votre demande, car le client tente d\u2019acc\u00e9der \u00e0 la ressource souhait\u00e9e par le biais d\u2019un chemin non autoris\u00e9 ou non valide.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-2-expired-cache-and-cookies\">2. Expired cache and cookies<\/h3>\n\n<p>Votre navigateur utilise des <a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Cookies\" target=\"_blank\" rel=\"noreferrer noopener\">cookies HTTP<\/a> pour stocker les donn\u00e9es du navigateur dans votre m\u00e9moire, et les cookies \u00ab\u00a0se souviennent\u00a0\u00bb de votre appareil et de votre navigateur. Les cookies et le <a href=\"https:\/\/www.bigcommerce.com\/ecommerce-answers\/what-browser-cache-and-why-it-important\/\" target=\"_blank\" rel=\"noreferrer noopener\">cache du navigateur<\/a> sont essentiels \u00e0 une exp\u00e9rience de navigation rapide.   <\/p>\n\n<p>Les cookies modernes stockent \u00e9galement votre statut d\u2019authentification. De cette fa\u00e7on, vous n\u2019avez plus besoin de vous connecter \u00e0 chaque fois pour acc\u00e9der \u00e0 un site web ou \u00e0 un r\u00e9seau social. Les cookies de navigateur maintiennent votre session en ligne active tout en veillant \u00e0 ce que le serveur vous envoie des informations en fonction de votre niveau d\u2019autorisation.  <\/p>\n\n<p>Si vos cookies expirent ou si votre cache est corrompu ou effac\u00e9, vous pouvez recevoir une erreur 401 non autoris\u00e9e en raison d\u2019une authentification incorrecte.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-3-firewall-and-plugin-configurations\">3. Firewall and plugin configurations<\/h3>\n\n<p>Si vous venez d\u2019installer un nouveau plugin ou un <a href=\"https:\/\/www.bluehost.com\/blog\/how-to-use-a-firewall-to-boost-your-website-security-against-attacks\/\">pare-feu sur votre site WordPress<\/a>, les tentatives d\u2019acc\u00e8s \u00e0 certaines pages peuvent g\u00e9n\u00e9rer des erreurs 401.  <\/p>\n\n<p>Par exemple, certains plugins de s\u00e9curit\u00e9 peuvent prendre le contr\u00f4le total de votre site Web et restreindre l\u2019acc\u00e8s \u00e0 certaines pages, m\u00eame lorsque vous disposez d\u2019un acc\u00e8s administrateur.  <\/p>\n\n<p>Comme le plugin ex\u00e9cute des diagnostics sur votre site Web pour l\u2019optimiser, toute tentative de connexion peut \u00eatre per\u00e7ue comme une activit\u00e9 malveillante. Cela peut entra\u00eener l\u2019affichage d\u2019une page d\u2019erreur 401 sur votre site Web. <\/p>\n\n<p>De plus, une mauvaise configuration des <a href=\"https:\/\/www.bluehost.com\/blog\/fr\/guide-du-debutant-pour-les-plugins-wordpress-comment-choisir-et-utiliser-les-bons-plugins\/\">plugins WordPress<\/a> peut provoquer l\u2019erreur 401, surtout si vous manipulez un nouveau plugin pour la premi\u00e8re fois.  <\/p>\n\n<p>Certains plugins de s\u00e9curit\u00e9 WordPress peuvent bloquer par inadvertance les utilisateurs autoris\u00e9s, provoquant des erreurs 401. Pour \u00e9viter ces probl\u00e8mes, envisagez d\u2019utiliser <a href=\"https:\/\/www.bluehost.com\/wordpress\/solutions\">la solution WordPress Bluehost<\/a>, qui fournit des configurations optimis\u00e9es pour la s\u00e9curit\u00e9 et la gestion des acc\u00e8s. Si vous cr\u00e9ez un nouveau site Web, <a href=\"https:\/\/bluehost.com\/fr\/blog\/construire-un-site-web-wordpress-avec-lia-le-guide-ultime-de-loutil-de-creation-de-site-ia-de-bluehost\/\">l\u2019outil de cr\u00e9ation de site Bluehost AI<\/a> vous aide \u00e0 cr\u00e9er un site WordPress avec les meilleures pratiques de s\u00e9curit\u00e9, r\u00e9duisant ainsi les probl\u00e8mes d\u2019acc\u00e8s d\u00e8s le d\u00e9part.    <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-4-protected-urls\">4. Protected URLs<\/h3>\n\n<p>L\u2019acc\u00e8s \u00e0 des URL sp\u00e9cifiques peut \u00eatre strictement contr\u00f4l\u00e9 ou g\u00e9r\u00e9 au niveau du serveur. Seul le personnel autoris\u00e9 peut acc\u00e9der \u00e0 ces ressources restreintes. Dans un tel cas, tenter d\u2019acc\u00e9der \u00e0 une telle URL \u00e0 partir d\u2019un navigateur Web non autoris\u00e9 peut g\u00e9n\u00e9rer une erreur 401.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-5-htaccess-file-restrictions\">5. .htaccess file restrictions<\/h3>\n\n<p>Les fichiers .htaccess vous permettent de modifier la configuration d\u2019un r\u00e9pertoire au sein d\u2019un site web. Supposons qu\u2019un fichier .htaccess soit livr\u00e9 avec des directives de protection par mot de passe. Si vous n\u2019avez pas le mot de passe, vous pouvez rencontrer une erreur d\u2019acc\u00e8s non autoris\u00e9 401.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-troubleshoot-401-errors-nbsp\">How to troubleshoot 401 errors?\u00a0<\/h2>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors.png\" alt=\"Suivez ces &#xE9;tapes pour r&#xE9;soudre votre erreur 401.\" class=\"wp-image-45242\" srcset=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors.png 1920w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-300x169.png 300w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-1024x576.png 1024w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-768x432.png 768w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-1536x864.png 1536w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-24x14.png 24w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-36x20.png 36w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Troubleshooting-401-errors-48x27.png 48w\" sizes=\"100vw\" \/><\/figure>\n\n<p>Comme nous l\u2019avons vu ci-dessus, une erreur 401 est souvent un probl\u00e8me c\u00f4t\u00e9 client plut\u00f4t que c\u00f4t\u00e9 serveur. Pour cette raison, il est souvent simple de le r\u00e9parer.   <\/p>\n\n<p>Voici plusieurs solutions que vous pouvez tenter :<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th><strong>\u00c9mettre<\/strong><\/th><th><strong>Cause possible<\/strong><\/th><th><strong>R\u00e9parer<\/strong><\/th><\/tr><tr><td>La connexion \u00e9choue malgr\u00e9 des informations d\u2019identification correctes<\/td><td>Session expir\u00e9e, probl\u00e8me de cache<\/td><td>Effacer les cookies, red\u00e9marrer la session<\/td><\/tr><tr><td>401 apr\u00e8s l\u2019installation du plugin<\/td><td>Plugin de s\u00e9curit\u00e9 bloquant l\u2019acc\u00e8s<\/td><td>D\u00e9sactiver temporairement les plug-ins de s\u00e9curit\u00e9<\/td><\/tr><tr><td>\u00c9chec de l\u2019int\u00e9gration de l\u2019API<\/td><td>En-t\u00eates d\u2019authentification manquants<\/td><td>V\u00e9rifier la cl\u00e9 API et les autorisations<\/td><\/tr><tr><td>La page du site Web affiche 401 au hasard<\/td><td>Cache DNS obsol\u00e8te<\/td><td>Vider le DNS \u00e0 l\u2019aide de la ligne de commande<\/td><\/tr><tr><td>Acc\u00e8s \u00e0 la page refus\u00e9 malgr\u00e9 la connexion de l\u2019administrateur<\/td><td>Restrictions du .htaccess<\/td><td>V\u00e9rifier et mettre \u00e0 jour le fichier .htaccess<\/td><\/tr><tr><td>Erreur 401 apr\u00e8s le changement de th\u00e8me<\/td><td>Param\u00e8tres de s\u00e9curit\u00e9 du th\u00e8me bloquant l\u2019acc\u00e8s<\/td><td>Revenez au th\u00e8me pr\u00e9c\u00e9dent ou v\u00e9rifiez les param\u00e8tres du th\u00e8me<\/td><\/tr><tr><td>Plusieurs tentatives de connexion infructueuses menant \u00e0 401<\/td><td>Plugin de s\u00e9curit\u00e9 : acc\u00e8s administrateur verrouill\u00e9<\/td><td>R\u00e9initialiser la connexion via phpMyAdmin<\/td><\/tr><tr><td>Accessing a website with an incorrect username or password<\/td><td>Lacks valid authentication credentials<\/td><td>Check your login credentials<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h3 class=\"wp-block-heading\" id=\"h-1-verify-the-url\">1. Verify the URL<\/h3>\n\n<p>L\u2019une des solutions les plus simples \u00e0 l\u2019erreur 401 consiste \u00e0 v\u00e9rifier si l\u2019URL utilis\u00e9e dans la barre d\u2019adresse de votre navigateur est valide ou correcte. Pour s\u00e9curiser un site Web, les serveurs rejettent les tentatives d\u2019acc\u00e8s \u00e0 partir d\u2019URL invalides ou incorrectes, souvent en raison de la saisie d\u2019un nom d\u2019utilisateur ou d\u2019un mot de passe erron\u00e9.   <\/p>\n\n<p>Tout d\u2019abord, assurez-vous que l\u2019URL est correctement orthographi\u00e9e. V\u00e9rifiez si votre URL cible comporte des caract\u00e8res sp\u00e9ciaux, des traits d\u2019union et l\u2019extension correcte. Si tout se passe bien, vous devriez maintenant acc\u00e9der au site Web sans probl\u00e8me.    <\/p>\n\n<p>Si vous rencontrez toujours l\u2019erreur 401, v\u00e9rifiez si l\u2019adresse de la page a chang\u00e9 depuis votre dernier acc\u00e8s. Il se peut qu\u2019il ait \u00e9t\u00e9 d\u00e9plac\u00e9 ou supprim\u00e9. Retournez \u00e0 la page d\u2019accueil et recherchez la page \u00e0 laquelle vous souhaitez acc\u00e9der. Souvent, vous trouverez le bon lien de cette fa\u00e7on.     <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-2-check-your-login-credentials\">2. Check your login credentials<\/h3>\n\n<p>Un autre \u00e9l\u00e9ment cl\u00e9 \u00e0 v\u00e9rifier est vos informations de connexion. Toute tentative d\u2019acc\u00e8s \u00e0 un site Web avec un nom d\u2019utilisateur ou un mot de passe incorrect peut entra\u00eener l\u2019affichage de cette erreur sur une page. Assurez-vous que vous disposez d\u2019informations d\u2019identification d\u2019authentification valides et que le nom d\u2019utilisateur et le mot de passe sont correctement utilis\u00e9s.  <\/p>\n\n<p>Si vous avez oubli\u00e9 le mot de passe, vous pouvez tenter de le r\u00e9initialiser ou de le r\u00e9cup\u00e9rer.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-3-clear-and-reload-the-browser-cache-and-cookies\">3. Clear and reload the browser cache and cookies<\/h3>\n\n<p>Comme nous l\u2019avons vu ci-dessus, la plupart des navigateurs modernes stockent votre statut d\u2019authentification dans des cookies et dans le cache du site Web. De cette fa\u00e7on, vous pouvez toujours reprendre l\u00e0 o\u00f9 vous vous \u00e9tiez arr\u00eat\u00e9. <\/p>\n\n<p>Le cache permet \u00e9galement d\u2019acc\u00e9l\u00e9rer la navigation, car la plupart des fichiers d\u2019\u00e9change sont temporairement stock\u00e9s dans la m\u00e9moire de votre appareil pour que vos identifiants restent actifs.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1915\" height=\"995\" src=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies.png\" alt=\"Vider le cache et les cookies dans le navigateur Mozilla Firefox.\" class=\"wp-image-45243\" srcset=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies.png 1915w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-300x156.png 300w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-1024x532.png 1024w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-768x399.png 768w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-1536x798.png 1536w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-24x12.png 24w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-36x19.png 36w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/Clearing-the-cache-and-cookies-48x25.png 48w\" sizes=\"100vw\" \/><\/figure>\n\n<p>Toute tentative d\u2019acc\u00e8s \u00e0 une application Web avec des cookies expir\u00e9s g\u00e9n\u00e8re souvent l\u2019erreur 401.  <\/p>\n\n<p>Une solution simple \u00e0 ce probl\u00e8me consiste \u00e0 effacer tous les cookies du site Web probl\u00e9matique et \u00e0 actualiser la page. Vous pouvez \u00e9galement effacer les donn\u00e9es de navigation et recharger la page. Cela peut signifier se connecter \u00e0 une nouvelle session.    <\/p>\n\n<p>Vous pouvez \u00e9galement <a href=\"https:\/\/www.bluehost.com\/blog\/fr\/comment-vider-votre-cache-wordpress-et-pourquoi-vous-devriez-le-faire\/\">vider le cache<\/a>, ce qui supprime tous les fichiers de cache et fait de la place pour les nouveaux fichiers et les connexions. Cela \u00e9limine souvent toutes les erreurs d\u2019acc\u00e8s non autoris\u00e9 401.   <\/p>\n\n<p>Le processus d\u2019effacement des cookies diff\u00e8re en fonction de votre navigateur.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-4-check-for-dns-changes\">4. Check for DNS changes<\/h3>\n\n<p>Bien que plus rares que d\u2019autres probl\u00e8mes, les modifications apport\u00e9es \u00e0 votre serveur de noms de domaine (DNS) peuvent provoquer des erreurs 401. <a href=\"https:\/\/bluehost.com\/fr\/blog\/quest-ce-que-le-dns-domain-name-system-et-comment-fonctionne-t-il\/\">Les enregistrements DNS<\/a> se trouvent g\u00e9n\u00e9ralement sur votre appareil pour l\u2019aider \u00e0 faire correspondre les URL \u00e0 leurs adresses IP.  <\/p>\n\n<p>Si votre cache DNS est obsol\u00e8te ou expir\u00e9, vous devrez peut-\u00eatre le vider pour supprimer les URL et adresses IP incorrectes.<\/p>\n\n<p>Vous pouvez vider le cache DNS \u00e0 l\u2019aide de la ligne de commande et forcer votre appareil \u00e0 actualiser et \u00e0 authentifier les URL.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"979\" height=\"218\" src=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache.jpg\" alt=\"Vider le cache DNS dans Windows.\" class=\"wp-image-45238\" srcset=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache.jpg 979w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache-300x67.jpg 300w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache-768x171.jpg 768w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache-24x5.jpg 24w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache-36x8.jpg 36w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/flush-DNS-cache-48x11.jpg 48w\" sizes=\"100vw\" \/><\/figure>\n\n<p>\u00c0 partir de l\u2019invite de commande Windows, ex\u00e9cutez la commande <strong>ipconfig\/flushdns<\/strong><strong>. <\/strong>Windows affichera un message confirmant que le cache DNS a \u00e9t\u00e9 vid\u00e9.  <\/p>\n\n<p>Sur un Mac, ex\u00e9cutez la commande <strong>sudo killall -HUP mDNSResponder<\/strong>.<\/p>\n\n<p>Using <a href=\"https:\/\/www.bluehost.com\/domains\">Bluehost Domain Services<\/a>, you can manage your DNS records efficiently and ensure they are correctly configured to prevent unexpected authentication failures. If your DNS settings change frequently, Bluehost allows for easy domain management to avoid login issues.<\/p>\n\n<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" viewbox=\"0 0 1000 300\"> \n\n  <image width=\"1000\" height=\"300\" xlink:href=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2025\/03\/Domains-1-3.png\"><\/image> <a xlink:href=\"https:\/\/www.bluehost.com\/domains\"> \n\n    <rect x=\"83\" y=\"203\" fill=\"#fff\" opacity=\"0\" width=\"168\" height=\"63\"><\/rect> \n\n  <\/a> \n\n<\/svg>\n\n<h3 class=\"wp-block-heading\" id=\"h-5-deactivate-themes-and-plugins\">5. Deactivate themes and plugins<\/h3>\n\n<p>L\u2019installation d\u2019un nouveau th\u00e8me ou d\u2019un nouveau plugin peut changer le comportement de votre site Web. Cela peut affecter les performances de votre site web et, dans certains cas, modifier le code PHP, JavaScript ou de la base de donn\u00e9es.   <\/p>\n\n<p>Si vous rencontrez des codes 401 sur une ou plusieurs pages apr\u00e8s l\u2019installation d\u2019un nouveau plugin ou d\u2019un nouveau th\u00e8me, essayez de le d\u00e9sactiver pour voir si cela r\u00e9sout le probl\u00e8me. Si ce n\u2019est pas le cas, vous devrez peut-\u00eatre <a href=\"https:\/\/www.bluehost.com\/blog\/guide-to-plugin-installation-uninstallation-activation-and-deactivation\/\">d\u00e9sactiver et r\u00e9activer tous vos plugins<\/a> jusqu\u2019\u00e0 ce que vous trouviez le coupable.   <\/p>\n\n<p>L\u2019annulation des mises \u00e0 jour peut \u00e9galement r\u00e9soudre les probl\u00e8mes caus\u00e9s par un code instable et \u00e9liminer les pages d\u2019erreur 401.<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-6-disable-passwords-on-pages\">6. Disable passwords on pages<\/h3>\n\n<p>La d\u00e9sactivation de la protection par mot de passe pour certaines pages de votre site web peut parfois r\u00e9soudre ce code d\u2019erreur. Vous pouvez modifier vos fichiers .htaccess et .htpasswd, mais uniquement si vous avez une exp\u00e9rience interm\u00e9diaire ou avanc\u00e9e dans le traitement des fichiers WordPress.<\/p>\n\n<p>Pour d\u00e9sactiver la protection par mot de passe :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Connectez-vous au panneau de configuration de votre fournisseur d\u2019h\u00e9bergement et acc\u00e9dez au gestionnaire de fichiers.<\/li>\n\n\n\n<li>Recherchez et ouvrez le r\u00e9pertoire prot\u00e9g\u00e9 par mot de passe.<\/li>\n\n\n\n<li>Lors de l\u2019activation de la protection par mot de passe, votre site Web WordPress g\u00e9n\u00e8re un fichier .htaccess. Vous pouvez le trouver dans ce r\u00e9pertoire.  <\/li>\n\n\n\n<li>Cr\u00e9ez une sauvegarde du fichier, car vous pourriez en avoir besoin \u00e0 l\u2019avenir.<\/li>\n\n\n\n<li>Une fois cela fait, supprimez le fichier .htaccess du r\u00e9pertoire.  <\/li>\n\n\n\n<li>Trouvez le fichier <a href=\"https:\/\/httpd.apache.org\/docs\/2.4\/programs\/htpasswd.html\" target=\"_blank\" rel=\"noreferrer noopener\">.htpasswd<\/a> cach\u00e9, cr\u00e9ez une sauvegarde et supprimez-le.  <\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\" id=\"h-7-check-the-www-authenticate-header-response\">7. Check the WWW-Authenticate header response<\/h3>\n\n<p>Si aucun de ces conseils de d\u00e9pannage n\u2019a fonctionn\u00e9, il se peut qu\u2019il s\u2019agisse d\u2019un probl\u00e8me plus profond c\u00f4t\u00e9 serveur.  <\/p>\n\n<p>Your next step is to check your website\u2019s WWW-Authenticate header. This will require administrator access.<\/p>\n\n<p>Lorsqu\u2019un serveur g\u00e9n\u00e8re une r\u00e9ponse 401, il envoie un champ d\u2019en-t\u00eate WWW-Authenticate avec au moins une interrogation \u00e0 la ressource cible. Cet en-t\u00eate a souvent une m\u00e9thode d\u2019authentification fixe qu\u2019un navigateur doit passer pour acc\u00e9der \u00e0 la page choisie.   <\/p>\n\n<p>En comprenant la r\u00e9ponse et la m\u00e9thode d\u2019authentification requise, vous pouvez identifier et r\u00e9soudre le probl\u00e8me.<\/p>\n\n<p>Pour acc\u00e9der \u00e0 l\u2019en-t\u00eate WWW-Authenticate :<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Ouvrez la page probl\u00e9matique dans votre navigateur. Si vous utilisez Google Chrome, cliquez avec le bouton droit de la souris sur la page et s\u00e9lectionnez <strong>inspecter. <\/strong>Cliquez sur <strong>Maj + Ctrl + C<\/strong> pour ouvrir la console du navigateur sur Firefox. <\/li>\n\n\n\n<li>S\u00e9lectionnez l\u2019entr\u00e9e avec le message d\u2019erreur 401 sous l\u2019onglet <strong>r\u00e9seau <\/strong>.<\/li>\n\n\n\n<li>Cliquez sur les <strong>en-t\u00eates<\/strong><strong> <\/strong>onglet. Sous l\u2019entr\u00e9e WWW-Authenticate dans les <strong>en-t\u00eates<\/strong> de <strong>r\u00e9ponse <\/strong> <strong> <\/strong>, recherchez la m\u00e9thode d\u2019authentification du serveur qui permet d\u2019acc\u00e9der \u00e0 la page Web.  <\/li>\n<\/ol>\n\n<p>Une fois que vous avez acc\u00e9d\u00e9 \u00e0 cette section, vous pouvez savoir o\u00f9 se trouve l\u2019erreur et voir comment r\u00e9soudre son probl\u00e8me d\u2019authentification.<\/p>\n\n<p>Pour un d\u00e9pannage avanc\u00e9 des probl\u00e8mes d\u2019authentification, l\u2019h\u00e9bergement sur <a href=\"https:\/\/www.bluehost.com\/hosting\/vps\">Bluehost VPS Hosting<\/a> ou<a href=\"https:\/\/www.bluehost.com\/hosting\/dedicated\"> Bluehost Dedicated Hosting<\/a> permet un meilleur contr\u00f4le sur les param\u00e8tres du serveur, garantissant ainsi la mise en \u0153uvre d\u2019en-t\u00eates d\u2019authentification appropri\u00e9s. Si vous pr\u00e9f\u00e9rez les solutions \u00e9volutives, <a href=\"https:\/\/www.bluehost.com\/hosting\/cloud\">Bluehost Cloud Hosting<\/a> optimise la gestion de l\u2019authentification, r\u00e9duisant ainsi les erreurs d\u2019acc\u00e8s.   <\/p>\n\n<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" viewbox=\"0 0 1001 300\"> \n\n  <image width=\"1001\" height=\"300\" xlink:href=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2025\/03\/Hosting-2.png\"><\/image> <a xlink:href=\"https:\/\/www.bluehost.com\/hosting\/shared\"> \n\n    <rect x=\"84\" y=\"180\" fill=\"#fff\" opacity=\"0\" width=\"187\" height=\"63\"><\/rect> \n\n  <\/a> \n\n<\/svg>\n\n<h3 class=\"wp-block-heading\" id=\"h-8-refresh-expired-tokens-nbsp\">8. Refresh expired tokens\u00a0<\/h3>\n\n<p>Some websites and apps use token-based authentication (like OAuth). If a token has expired or become invalid, you\u2019ll likely see a 401 error. To resolve this, try logging out and back in or reauthenticating with a new token. In apps using APIs, you may need to generate and replace the old token manually or programmatically.\u00a0<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-9-verify-api-authentication-credentials-nbsp\">9. Verify API authentication credentials\u00a0<\/h3>\n\n<p>If you\u2019re using an API, double-check that your authentication credentials (such as an API key, access token or bearer token) are still valid. A typo or expired token could trigger the 401 response. Make sure you&rsquo;re using the correct method of authentication required by the API documentation.\u00a0<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-10-check-permissions-and-access-rights-nbsp\">10. Check permissions and access rights\u00a0<\/h3>\n\n<p>Incorrect file or user permissions on the server can result in 401 errors, especially for private pages, folders or resources. Ensure the authenticated user or role has the correct access level. If you&rsquo;re running a multi-user platform, confirm that user roles and privileges are configured properly.\u00a0<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-11-debug-oauth-or-sso-issues-nbsp\">11. Debug OAuth or SSO issues\u00a0<\/h3>\n\n<p>OAuth or Single Sign-On (SSO) systems may fail due to misconfigurations in redirect URIs, client IDs or scopes. This typically happens after changes to the authentication flow or third-party integrations. Double-check the settings in your identity provider or app dashboard to ensure everything is correctly set up.\u00a0<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-12-inspect-server-logs-nbsp\">12. Inspect server logs\u00a0<\/h3>\n\n<p>For a more detailed look at what\u2019s causing the 401 error, examine your server logs. They often reveal missing credentials, incorrect endpoints or unauthorized access attempts. This step requires server access and is best done if you\u2019re comfortable with backend systems or with the help of your hosting provider.\u00a0<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-13-reconfigure-the-authentication-server-nbsp\">13. Reconfigure the authentication server\u00a0<\/h3>\n\n<p>In cases where authentication is handled by a dedicated server (such as in enterprise environments), misconfigurations or downtime can result in 401 errors. You may need to restart the server, fix firewall rules or review authentication protocols to restore proper access.\u00a0<\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-14-contact-your-host\">14. Contact your host<\/h3>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help.png\" alt=\"Si tout le reste &#xE9;choue, vous pouvez contacter votre h&#xE9;bergeur pour obtenir de l&#x2019;aide sur votre erreur.\" class=\"wp-image-45239\" srcset=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help.png 1920w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-300x169.png 300w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-1024x576.png 1024w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-768x432.png 768w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-1536x864.png 1536w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-24x14.png 24w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-36x20.png 36w, https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2023\/06\/contact-for-401-error-help-48x27.png 48w\" sizes=\"100vw\" \/><\/figure>\n\n<p>Si vous avez tout essay\u00e9 en vain, vous pouvez contacter votre <a href=\"https:\/\/www.bluehost.com\/hosting\">fournisseur d\u2019h\u00e9bergement<\/a> pour obtenir de l\u2019aide. L\u2019\u00e9quipe d\u2019assistance technique de votre h\u00e9bergeur peut explorer votre site Web et vous aider \u00e0 d\u00e9panner les erreurs 401 et autres erreurs HTTP. <\/p>\n\n<p>If you&rsquo;re using Bluehost, our expert support team is available 24\/7. We can assist you with diagnosing server issues, reviewing authentication settings and restoring site access quickly and securely.\u00a0<\/p>\n\n<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" viewbox=\"0 0 1000 300\"> \n\n  <image width=\"1000\" height=\"300\" xlink:href=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2025\/03\/WordPress-Support.jpg\"><\/image> <a xlink:href=\"https:\/\/www.bluehost.com\/pro-design-live\"> \n\n    <rect x=\"81\" y=\"183\" fill=\"#fff\" opacity=\"0\" width=\"138\" height=\"54\"><\/rect> \n\n  <\/a> \n\n<\/svg>\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-prevent-future-401-error-codes-on-your-website\">How to prevent future 401 error codes on your website?<\/h2>\n\n<p>Sometimes http 401 responses appear not because of server misconfiguration but due to simple browser issues like expired cookies or outdated cache.<\/p>\n\n<p>Il vaut mieux \u00e9viter les erreurs que de les g\u00e9rer. Alors, comment \u00e9viter les codes d\u2019erreur 401 et autres codes d\u2019erreur HTTP sur votre site Web ?   <\/p>\n\n<p>Voici quelques conseils rapides :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Gardez votre navigateur \u00e0 jour, ce qui vous permet d\u2019acc\u00e9der aux sites Web \u00e0 partir d\u2019un navigateur efficace et puissant.<\/li>\n\n\n\n<li>Assurez-vous que la configuration de votre serveur et ses fonctionnalit\u00e9s sont solides. Cela permet d\u2019\u00e9viter les erreurs de serveur qui peuvent emp\u00eacher l\u2019authentification correcte de la page. <\/li>\n\n\n\n<li>V\u00e9rifiez les URL et les identifiants de connexion avant d\u2019acc\u00e9der \u00e0 un site Web prot\u00e9g\u00e9 par un mot de passe.<\/li>\n\n\n\n<li>Effacez fr\u00e9quemment les cookies et le cache de votre navigateur. Bien que vous deviez peut-\u00eatre vous connecter plus souvent \u00e0 des sites Web, cela permet d\u2019\u00e9viter les erreurs 401 potentielles. <\/li>\n\n\n\n<li>Assurez-vous que vos logiciels, th\u00e8mes et plugins <a href=\"http:\/\/wordpress.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">WordPress<\/a> sont \u00e0 jour. L\u2019utilisation d\u2019anciens th\u00e8mes et plugins expose votre site web \u00e0 des erreurs et autres vuln\u00e9rabilit\u00e9s.   <\/li>\n<\/ul>\n\n<p>Using <a href=\"https:\/\/www.bluehost.com\/wordpress\/wordpress-hosting\">Bluehost WordPress Hosting<\/a>, you can keep your website updated automatically, reducing security risks that can lead to authentication errors like the 401 response. <\/p>\n\n<p>For enhanced security, <a href=\"https:\/\/www.bluehost.com\/blog\/protect-your-website-with-sitelock\/\">SiteLock<\/a> provides automated malware scans, helping prevent unauthorized access and login issues. Additionally, if your 401 error code stem from email authentication issues, <a href=\"https:\/\/www.bluehost.com\/help\/article\/professional-email\">Bluehost Professional Email<\/a> ensures smooth, secure access to your website-related email services.\u00a0<\/p>\n\n<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" viewbox=\"0 0 1001 300\"> \n\n  <image width=\"1001\" height=\"300\" xlink:href=\"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2025\/03\/WordPress-Hosting-10.jpg\"><\/image> <a xlink:href=\"https:\/\/www.bluehost.com\/wordpress\/wordpress-hosting\"> \n\n    <rect x=\"83\" y=\"203\" fill=\"#fff\" opacity=\"0\" width=\"130\" height=\"63\"><\/rect> \n\n  <\/a> \n\n<\/svg>\n\n<h2 class=\"wp-block-heading\">Erreurs courantes lors de la correction de l\u2019erreur 401<\/h2>\n\n<p>Lors du d\u00e9pannage d\u2019une erreur 401 non autoris\u00e9e, il est facile d\u2019oublier certains d\u00e9tails qui peuvent entra\u00eener des probl\u00e8mes prolong\u00e9s. Voici quelques erreurs courantes \u00e0 \u00e9viter, ainsi que leurs solutions : <\/p>\n\n<h3 class=\"wp-block-heading\">1. Utilisation d\u2019un format d\u2019URL incorrect<\/h3>\n\n<p>Une simple faute de frappe dans l\u2019URL peut d\u00e9clencher l\u2019erreur. La saisie d\u2019une URL obsol\u00e8te ou incorrecte peut entra\u00eener un \u00e9chec de l\u2019authentification ou un acc\u00e8s restreint \u00e0 la page demand\u00e9e. <br\/><strong>Solution:<\/strong> V\u00e9rifiez l\u2019URL pour vous assurer qu\u2019elle est correctement orthographi\u00e9e, qu\u2019elle commence par https:\/\/ et qu\u2019elle ne contient pas de barres obliques ou de caract\u00e8res inutiles. Si la page a \u00e9t\u00e9 d\u00e9plac\u00e9e ou supprim\u00e9e, acc\u00e9dez \u00e0 la page d\u2019accueil ou au sitemap pour trouver le bon lien. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-2-forgetting-to-clear-browser-cache-amp-cookies\">2. Oublier de vider le cache du navigateur et les cookies<\/h3>\n\n<p>Les jetons d\u2019authentification expir\u00e9s stock\u00e9s dans les cookies peuvent persister l\u2019erreur 401, m\u00eame apr\u00e8s la r\u00e9solution du probl\u00e8me. Si une ancienne session est stock\u00e9e dans le cache de votre navigateur, le processus d\u2019authentification peut \u00e9chouer \u00e0 plusieurs reprises. <\/p>\n\n<p><br\/><strong>Solution:<\/strong> Effacez le cache et les cookies de votre navigateur dans le menu des param\u00e8tres, puis red\u00e9marrez votre navigateur avant de r\u00e9essayer d\u2019y acc\u00e9der. Cela supprimera les donn\u00e9es de session obsol\u00e8tes et permettra une nouvelle tentative d\u2019authentification. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-3-not-checking-login-credentials-properly\">3. Ne pas v\u00e9rifier correctement les identifiants de connexion<\/h3>\n\n<p>Les utilisateurs supposent souvent qu\u2019ils saisissent le nom d\u2019utilisateur et le mot de passe corrects, mais peuvent utiliser sans le savoir des informations d\u2019identification obsol\u00e8tes ou incorrectes. Les tentatives infructueuses r\u00e9p\u00e9t\u00e9es peuvent \u00e9galement entra\u00eener des verrouillages temporaires du compte et un code d\u2019\u00e9tat 401. <\/p>\n\n<p><br\/><strong>Solution:<\/strong> Assurez-vous d\u2019utiliser les identifiants de connexion les plus r\u00e9cents. Si vous n\u2019\u00eates pas s\u00fbr, r\u00e9initialisez votre mot de passe \u00e0 l\u2019aide des options de r\u00e9cup\u00e9ration du site Web. V\u00e9rifiez \u00e9galement si le verrouillage des majuscules ou le verrouillage num\u00e9rique est accidentellement activ\u00e9 lors de la saisie de vos donn\u00e9es.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-4-ignoring-security-plugins-amp-firewalls\">4. Ignorer les plugins de s\u00e9curit\u00e9 et les pare-feu<\/h3>\n\n<p>Certains plug-ins de s\u00e9curit\u00e9 ou pare-feu peuvent bloquer les tentatives de connexion l\u00e9gitimes, les confondant avec des tentatives d\u2019acc\u00e8s non autoris\u00e9es. Cela peut se produire si les param\u00e8tres de s\u00e9curit\u00e9 sont trop restrictifs ou si une adresse IP a \u00e9t\u00e9 mise sur liste noire par erreur. <\/p>\n\n<p><br\/><strong>Solution:<\/strong> D\u00e9sactivez temporairement les plugins de s\u00e9curit\u00e9 comme Wordfence ou SiteLock et essayez de vous connecter \u00e0 nouveau. Si l\u2019acc\u00e8s est r\u00e9tabli, ajustez les param\u00e8tres du plugin pour \u00e9viter les faux positifs tout en maintenant la s\u00e9curit\u00e9. <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-the-difference-between-error-401-and-403-errors\">Quelle est la diff\u00e9rence entre les erreurs 401 et les erreurs 403 ?<\/h2>\n\n<p>Error 401 (Unauthorized) occurs when authentication is required but missing or invalid\u2014like incorrect login details or expired tokens. In contrast, error 403 (Forbidden) means access is denied even with valid credentials, usually due to permission settings or security rules. To fix 401, check your login or API credentials; for 403, adjust file permissions or server configurations.\u00a0<\/p>\n\n<p>Read more: <a href=\"https:\/\/www.bluehost.com\/blog\/fix-403-forbidden-error-wordpress\/\">How to Fix the 403 Forbidden Error in WordPress<\/a>\u00a0<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-variations-of-401-authentication-error-nbsp\">Variations of 401 authentication error\u00a0<\/h2>\n\n<p>The 401 error code can appear in several forms depending on the platform or server. Here are common variations of the HTTP error 401:\u00a0<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>401 unauthorized<\/strong>: Trigger when authentication credentials are missing or invalid\u00a0<\/li>\n\n\n\n<li><strong>HTTP error 401 \u2013 unauthorized access<\/strong>: Appear when users try to access restricted content without proper login\u00a0<\/li>\n\n\n\n<li><strong>401 authorization required<\/strong>: Signal that the server expects valid authentication details before granting access\u00a0<\/li>\n\n\n\n<li><strong>401 \u2013 access is denied due to invalid credentials<\/strong>: Display after failed login attempts or expired tokens\u00a0<\/li>\n\n\n\n<li><strong>401 error code from API or app<\/strong>: Indicate issues like invalid API keys or missing authentication headers\u00a0<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"h-final-thoughts-nbsp\">R\u00e9flexions finales  <\/h2>\n\n<p>Le code de r\u00e9ponse de l\u2019erreur 401 peut \u00eatre frustrant, mais avec une bonne maintenance du site Web, vous pouvez pr\u00e9venir et r\u00e9soudre ces probl\u00e8mes efficacement. Le choix d\u2019un fournisseur d\u2019h\u00e9bergement fiable garantit que votre site web reste \u00e0 jour, s\u00e9curis\u00e9 et optimis\u00e9 pour des processus d\u2019authentification fluides. Avec Bluehost WordPress Hosting, les mises \u00e0 jour automatiques aident \u00e0 r\u00e9duire les vuln\u00e9rabilit\u00e9s, tandis que SiteLock et CodeGuard fournissent une surveillance de s\u00e9curit\u00e9 am\u00e9lior\u00e9e et des sauvegardes pour \u00e9viter les probl\u00e8mes de connexion.    <\/p>\n\n<p>Vous recherchez une exp\u00e9rience d\u2019h\u00e9bergement s\u00e9curis\u00e9e et sans tracas ? Consultez <a href=\"https:\/\/www.bluehost.com\/wordpress\/wordpress-hosting\">les plans d\u2019h\u00e9bergement WordPress de Bluehost<\/a> et profitez des mises \u00e0 jour automatiques de WordPress qui aident \u00e0 garder votre site Web s\u00e9curis\u00e9 et sans erreur.   <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\">Foire aux questions<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1689359803164\"><strong class=\"schema-faq-question\"><strong>What is 401 error code and why does it appear as an http error?<\/strong><\/strong> <p class=\"schema-faq-answer\">The 401 status code is an http status code that indicates the request could not be completed because authentication is missing or invalid. It usually means the server did not receive proper credentials.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1689359816586\"><strong class=\"schema-faq-question\"><strong>What does 401 authorization required meaning imply in simple terms?<\/strong><\/strong> <p class=\"schema-faq-answer\">It means the server is demanding valid authentication details before allowing access to the requested web page. In other words, the 401 status code is telling you that login details or credentials are either missing or incorrect.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757585509819\"><strong class=\"schema-faq-question\"><strong>Why am I getting a 401 unauthorized error while signing in?<\/strong><\/strong> <p class=\"schema-faq-answer\">A 401 unauthorized error often happens when login credentials, tokens or sessions are invalid. It can also occur if you try to access a restricted web page with insufficient permissions.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757585520192\"><strong class=\"schema-faq-question\"><strong>Can http 401 error be related to an api key issue?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes. An api key that is missing, expired or incorrectly set in the header response can cause an http 401 error. This happens often with APIs that require secure identification before granting data access.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757585538358\"><strong class=\"schema-faq-question\"><strong>Why does my browser\u2019s cookies sometimes trigger an error code 401?<\/strong><\/strong> <p class=\"schema-faq-answer\">If your browser\u2019s cookies are corrupted or not properly updated, the server may reject your session and return error code 401. Clearing cookies and the outdated browser cache often fixes this problem.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757585549838\"><strong class=\"schema-faq-question\"><strong>How does google chrome show http 401 messages differently from other browsers?<\/strong><\/strong> <p class=\"schema-faq-answer\">On google chrome, an http 401 message may appear as a blank page or direct notification saying \u00ab\u00a0401 authorization required.\u00a0\u00bb Other browsers might phrase it slightly differently, but the underlying http status code remains the same.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757585559701\"><strong class=\"schema-faq-question\"><strong>Is http 401 different from 401 unauthorized?<\/strong><\/strong> <p class=\"schema-faq-answer\">No, http 401 and 401 unauthorized are the same thing. Both indicate that the server refuses to provide the requested resource until you re authenticate with valid credentials.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757585582423\"><strong class=\"schema-faq-question\"><strong>What steps can fix trouble accessing websites due to a 401 unauthorized error?<\/strong><\/strong> <p class=\"schema-faq-answer\">You can try checking credentials, refreshing the access token, clearing browser\u2019s cookies, updating login details or verifying that you have sufficient permissions. If these steps don\u2019t help, contact the site administrator for further support.<\/p> <\/div> <\/div>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Percez les myst\u00e8res de l\u2019erreur 401 gr\u00e2ce \u00e0 notre guide \u00e9tape par \u00e9tape. D\u00e9couvrez comment r\u00e9soudre efficacement les probl\u00e8mes de code d\u2019\u00e9tat 401.   <\/p>\n","protected":false},"author":15,"featured_media":153401,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_title":"Qu\u2019est-ce qu\u2019une erreur 401 ? Comment d\u00e9panner, r\u00e9parer et emp\u00eacher qu\u2019il ne revienne","_yoast_wpseo_metadesc":"Vous rencontrez des erreurs 401 sur votre site WordPress ? Lisez ce tutoriel pour apprendre \u00e0 identifier les causes et 8 fa\u00e7ons de r\u00e9soudre les erreurs 401.","inline_featured_image":false,"footnotes":""},"categories":[1970],"tags":[3509,3517,3520,3533],"ppma_author":[592,948],"class_list":["post-153393","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-securite","tag-conformite","tag-faq-foire-aux-questions","tag-guides-pratiques","tag-tutoriels"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Qu\u2019est-ce qu\u2019une erreur 401 ? Comment d\u00e9panner, r\u00e9parer et emp\u00eacher qu\u2019il ne revienne<\/title>\n<meta name=\"description\" content=\"Vous rencontrez des erreurs 401 sur votre site WordPress ? 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Clearing cookies and the outdated browser cache often fixes this problem.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/#faq-question-1757585549838","position":6,"url":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/#faq-question-1757585549838","name":"How does google chrome show http 401 messages differently from other browsers?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"On google chrome, an http 401 message may appear as a blank page or direct notification saying \"401 authorization required.\" Other browsers might phrase it slightly differently, but the underlying http status code remains the same.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/#faq-question-1757585559701","position":7,"url":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/#faq-question-1757585559701","name":"Is http 401 different from 401 unauthorized?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No, http 401 and 401 unauthorized are the same thing. Both indicate that the server refuses to provide the requested resource until you re authenticate with valid credentials.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/#faq-question-1757585582423","position":8,"url":"https:\/\/www.bluehost.com\/blog\/fr\/quest-ce-quune-erreur-401-causes-les-plus-courantes-et-comment-y-remedier\/#faq-question-1757585582423","name":"What steps can fix trouble accessing websites due to a 401 unauthorized error?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"You can try checking credentials, refreshing the access token, clearing browser\u2019s cookies, updating login details or verifying that you have sufficient permissions. If these steps don\u2019t help, contact the site administrator for further support.","inLanguage":"fr-FR"},"inLanguage":"fr-FR"}]}},"authors":[{"term_id":592,"user_id":15,"is_guest":0,"slug":"devin","display_name":"Devin Sears","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/3561264b7806b1f967a8dcbc7907681637719b76901f52ae90014c76da482d5f?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":"","9":"","10":"","11":"","12":"","13":"","14":"","15":""},{"term_id":948,"user_id":152,"is_guest":0,"slug":"charrvi-singh","display_name":"Charrvi Singh","avatar_url":{"url":"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2024\/11\/Media-e1732870672924.jpg","url2x":"https:\/\/www.bluehost.com\/blog\/wp-content\/uploads\/2024\/11\/Media-e1732870672924.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":"","9":"","10":"","11":"","12":"","13":"","14":"","15":""}],"_links":{"self":[{"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/posts\/153393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/comments?post=153393"}],"version-history":[{"count":1,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/posts\/153393\/revisions"}],"predecessor-version":[{"id":251316,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/posts\/153393\/revisions\/251316"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/media\/153401"}],"wp:attachment":[{"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/media?parent=153393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/categories?post=153393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/tags?post=153393"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.bluehost.com\/blog\/fr\/wp-json\/wp\/v2\/ppma_author?post=153393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}