{"id":4891,"date":"2026-06-04T10:38:08","date_gmt":"2026-06-04T08:38:08","guid":{"rendered":"https:\/\/computershop.eu\/blog\/?p=4882"},"modified":"2026-06-04T10:58:49","modified_gmt":"2026-06-04T08:58:49","slug":"configuration-du-pare-feu-pour-les-mises-a-jour-windows-11","status":"publish","type":"post","link":"https:\/\/computershop.eu\/blog\/fr\/configuration-du-pare-feu-pour-les-mises-a-jour-windows-11","title":{"rendered":"Configuration du pare-feu pour les mises \u00e0 jour Windows 11"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<p class=\"wp-block-paragraph\">Les mises \u00e0 jour Windows 11 sont essentielles pour la s\u00e9curit\u00e9, les performances et la compatibilit\u00e9. Cependant, souvent, les mises \u00e0 jour \u00e9chouent non pas \u00e0 cause du syst\u00e8me d&#8217;exploitation, mais \u00e0 cause des configurations restrictives des pare-feu et des serveurs proxy. Microsoft a r\u00e9cemment publi\u00e9 des recommandations actualis\u00e9es concernant la configuration du pare-feu et de l&#8217;ensemble de l&#8217;infrastructure r\u00e9seau pour permettre le bon fonctionnement du service Windows Update.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans cet article, vous apprendrez comment configurer le pare-feu et le proxy afin que Windows 11 re\u00e7oive les mises \u00e0 jour sans interruption, \u00e9vitant les erreurs de connectivit\u00e9, les blocages de t\u00e9l\u00e9chargement et les probl\u00e8mes de conformit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi des probl\u00e8mes surviennent-ils avec Windows Update?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dans les environnements d&#8217;entreprise, le trafic Internet est souvent filtr\u00e9 par des pare-feu de nouvelle g\u00e9n\u00e9ration, des proxys HTTPS et des syst\u00e8mes d&#8217;inspection TLS. Bien que ces mesures augmentent la s\u00e9curit\u00e9, elles peuvent interf\u00e9rer avec les m\u00e9canismes de s\u00e9curit\u00e9 int\u00e9gr\u00e9s \u00e0 Windows Update. Microsoft recommande d&#8217;\u00e9viter l&#8217;interception du trafic vers les points de terminaison de mise \u00e0 jour officiels, car le service valide les certificats et les connexions chiffr\u00e9es pour pr\u00e9venir les attaques de type \u00ab man-in-the-middle \u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsqu&#8217;un pare-feu bloque certains sous-domaines Microsoft ou lorsqu&#8217;un proxy r\u00e9\u00e9crit les certificats TLS, les clients Windows 11 peuvent pr\u00e9senter des sympt\u00f4mes tels que :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>des mises \u00e0 jour qui restent en \u00e9tat de \u00ab t\u00e9l\u00e9chargement \u00bb;<\/li>\n\n\n\n<li>des codes d&#8217;erreur Windows Update;<\/li>\n\n\n\n<li>l&#8217;impossibilit\u00e9 de t\u00e9l\u00e9charger les mises \u00e0 jour cumulatives;<\/li>\n\n\n\n<li>des probl\u00e8mes avec Microsoft Defender et les mises \u00e0 jour de d\u00e9finitions;<\/li>\n\n\n\n<li>l&#8217;\u00e9chec des mises \u00e0 jour pour Microsoft Store et les pilotes.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Le principe recommand\u00e9 par Microsoft<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Microsoft recommande de permettre l&#8217;acc\u00e8s direct aux points de terminaison de Windows Update et de les exclure des processus d&#8217;inspection TLS ou de d\u00e9chiffrement SSL. Au lieu de s&#8217;appuyer sur des adresses IP fixes, les organisations devraient permettre l&#8217;acc\u00e8s bas\u00e9 sur les domaines et sous-domaines officiels de Microsoft, car l&#8217;infrastructure cloud change fr\u00e9quemment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce mod\u00e8le offre deux avantages importants :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>maintient l&#8217;int\u00e9grit\u00e9 des v\u00e9rifications cryptographiques effectu\u00e9es par Windows Update;<\/li>\n\n\n\n<li>r\u00e9duit le nombre d&#8217;incidents g\u00e9n\u00e9r\u00e9s par les modifications de l&#8217;infrastructure Microsoft.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Configuration du pare-feu pour Windows 11<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pour un fonctionnement optimal, le pare-feu doit autoriser les connexions HTTPS sortantes vers les services Windows Update.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Recommandations essentielles pour la configuration du pare-feu<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Autoriser le trafic HTTPS (port 443) vers les points de terminaison Windows Update.<\/li>\n\n\n\n<li>\u00c9viter de bloquer les sous-domaines Microsoft utilis\u00e9s pour la distribution des mises \u00e0 jour.<\/li>\n\n\n\n<li>Ne pas effectuer d&#8217;inspection SSL pour le trafic Windows Update.<\/li>\n\n\n\n<li>V\u00e9rifier r\u00e9guli\u00e8rement les listes officielles de points de terminaison Microsoft, car elles peuvent \u00eatre mises \u00e0 jour.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dans les organisations qui utilisent des solutions telles que Palo Alto, Fortinet, Check Point ou Cisco Secure Firewall, il est recommand\u00e9 de cr\u00e9er des politiques d\u00e9di\u00e9es aux services Microsoft Update, s\u00e9par\u00e9es des politiques g\u00e9n\u00e9rales de navigation web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Configuration du proxy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les proxys repr\u00e9sentent l&#8217;une des causes les plus fr\u00e9quentes des probl\u00e8mes de mise \u00e0 jour dans Windows 11.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Windows utilise plusieurs m\u00e9canismes de configuration de proxy, y compris WinINET et WinHTTP. Une configuration incorrecte peut entra\u00eener des situations o\u00f9 le navigateur fonctionne normalement, mais Windows Update ne peut pas communiquer avec les services Microsoft.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Meilleures pratiques<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utiliser des configurations de proxy au niveau du syst\u00e8me, pas seulement au niveau de l&#8217;utilisateur.<\/li>\n\n\n\n<li>S&#8217;assurer que les services Windows peuvent acc\u00e9der au proxy m\u00eame avant l&#8217;authentification de l&#8217;utilisateur.<\/li>\n\n\n\n<li>V\u00e9rifier la synchronisation entre les configurations WinINET et WinHTTP.<\/li>\n\n\n\n<li>\u00c9viter les proxys qui modifient les certificats <a href=\"https:\/\/learn.microsoft.com\/en-us\/windows-server\/security\/tls\/transport-layer-security-protocol\" target=\"_blank\" rel=\"noreferrer noopener\">TLS<\/a> pour le trafic Windows Update.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Microsoft souligne que de nombreux services Windows s&#8217;ex\u00e9cutent dans des contextes diff\u00e9rents de l&#8217;utilisateur connect\u00e9, c&#8217;est pourquoi une configuration exclusivement par utilisateur peut g\u00e9n\u00e9rer des erreurs difficiles \u00e0 diagnostiquer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Optimisation de la livraison et impact sur le r\u00e9seau<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"> Windows 11 utilise le service d&#8217;optimisation de la livraison (Delivery Optimization) pour acc\u00e9l\u00e9rer la distribution des mises \u00e0 jour et r\u00e9duire la consommation de bande passante. Cela permet de t\u00e9l\u00e9charger les paquets \u00e0 la fois depuis Microsoft et d&#8217;autres appareils autoris\u00e9s sur le r\u00e9seau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour les organisations, il est recommand\u00e9 d&#8217;\u00e9valuer les politiques d&#8217;optimisation de la livraison afin que :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>les mises \u00e0 jour soient distribu\u00e9es efficacement entre les stations locales;<\/li>\n\n\n\n<li>la consommation d&#8217;Internet soit r\u00e9duite;<\/li>\n\n\n\n<li>les mises \u00e0 jour soient livr\u00e9es plus rapidement dans les succursales et les sites distants.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Comment v\u00e9rifier si le pare-feu bloque Windows Update<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si vous rencontrez des probl\u00e8mes de mise \u00e0 jour, v\u00e9rifiez les points suivants :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Tester la connectivit\u00e9 HTTPS<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Confirmer que les appareils peuvent acc\u00e9der aux points de terminaison Microsoft sans erreurs de certificat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Analyser les journaux du pare-feu<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rechercher les connexions refus\u00e9es vers les domaines Microsoft utilis\u00e9s par Windows Update.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. V\u00e9rifier la configuration du proxy<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comparer les param\u00e8tres WinHTTP et WinINET et valider l&#8217;acc\u00e8s des services syst\u00e8me.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Examiner le journal Windows Update<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les journaux peuvent indiquer des probl\u00e8mes d&#8217;authentification TLS, de r\u00e9solution DNS ou d&#8217;acc\u00e8s via proxy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Le fondement d&#8217;un processus de mise \u00e0 jour Windows 11 stable et s\u00e9curis\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une configuration correcte du pare-feu et du proxy repr\u00e9sente le fondement d&#8217;un processus de mise \u00e0 jour Windows 11 stable et s\u00e9curis\u00e9. La recommandation principale de Microsoft est claire : permettre l&#8217;acc\u00e8s aux points de terminaison officiels de Windows Update, \u00e9viter l&#8217;interception TLS et utiliser des configurations de proxy compatibles avec les services syst\u00e8me.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour les organisations qui visent la conformit\u00e9, la <a href=\"https:\/\/computershop.eu\/blog\/fr\/demarrage-securise-sous-windows-mise-a-jour-davril-2026\" target=\"_blank\" rel=\"noreferrer noopener\">s\u00e9curit\u00e9<\/a> et la r\u00e9duction des temps d&#8217;administration, la mise en \u0153uvre de ces bonnes pratiques peut \u00e9liminer la plupart des incidents li\u00e9s aux mises \u00e0 jour Windows 11 et garantir une exp\u00e9rience pr\u00e9visible pour les utilisateurs et les \u00e9quipes informatiques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Source : <a href=\"https:\/\/techcommunity.microsoft.com\/blog\/windows-itpro-blog\/configuring-firewall-and-proxies-for-smooth-windows-updates\/4517913\">microsoft.com<\/a><\/p>\n\t<div class=\"quickshare-container\">\r\n\t<ul class=\"quickshare-genericons monochrome quickshare-effect-expand\">\r\n\t\t<li class=\"quickshare-share\">Share:<\/li> \r\n\t\t<li><a href=\"https:\/\/facebook.com\/sharer.php?u=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fconfiguration-du-pare-feu-pour-les-mises-a-jour-windows-11&amp;t=Configuration+du+pare-feu+pour+les+mises+%C3%A0+jour+Windows+11+<+Refurbished+Computers+-+ComputerShop.EU\" target=\"_blank\" title=\"Share on Facebook\"><span class=\"quickshare-facebook\">Facebook<\/span><\/a><\/li>\t\t<li><a href=\"https:\/\/twitter.com\/intent\/tweet?url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fconfiguration-du-pare-feu-pour-les-mises-a-jour-windows-11&amp;text=Configuration+du+pare-feu+pour+les+mises+%C3%A0+jour+Windows+11+<+Refurbished+Computers+-+ComputerShop.EU\" target=\"_blank\" title=\"Share on Twitter\"><span class=\"quickshare-twitter\">Twitter<\/span><\/a><\/li>\t\t<li><a href=\"http:\/\/pinterest.com\/pin\/create\/button\/?url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fconfiguration-du-pare-feu-pour-les-mises-a-jour-windows-11&amp;media=https%3A%2F%2Fcomputershop.eu%2Fblog%2Fwp-content%2Fuploads%2F2026%2F06%2FWindows-11-firewall-set-up-300x157.png&amp;description=Les+mises+%C3%A0+jour+Windows+11+sont+essentielles+pour+la+s%C3%A9curit%C3%A9%2C+les+performances+et+la+compatibilit%C3%A9.+Cependant%2C+souvent%2C+les+mises+%C3%A0+jour+%C3%A9chouent+non+pas+%C3%A0+cause+du+syst%C3%A8me+d%27exploitation%2C+mais+%C3%A0+cause+des+configurations+restrictives+des+pare-feu+et+des%26hellip%3B\" target=\"_blank\" title=\"Share on Pinterest\"><span class=\"quickshare-pinterest\">Pinterest<\/span><\/a><\/li>\t\t<li><a href=\"http:\/\/linkedin.com\/shareArticle?mini=true&amp;url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fconfiguration-du-pare-feu-pour-les-mises-a-jour-windows-11&amp;title=Configuration+du+pare-feu+pour+les+mises+%C3%A0+jour+Windows+11&amp;source=Refurbished+Computers+-+ComputerShop.EU&amp;summary=Les+mises+%C3%A0+jour+Windows+11+sont+essentielles+pour+la+s%C3%A9curit%C3%A9%2C+les+performances+et+la+compatibilit%C3%A9.+Cependant%2C+souvent%2C+les+mises+%C3%A0+jour+%C3%A9chouent+non+pas+%C3%A0+cause+du+syst%C3%A8me+d%27exploitation%2C+mais+%C3%A0+cause+des+configurations+restrictives+des+pare-feu+et+des%26hellip%3B\" title=\"Share on Linkedin\" target=\"_blank\"><span class=\"quickshare-linkedin\">Linkedin<\/span><\/a><\/li>\t\t<li><a href=\"https:\/\/plus.google.com\/share?url=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fconfiguration-du-pare-feu-pour-les-mises-a-jour-windows-11\" target=\"_blank\" title=\"Share on Google+\"><span class=\"quickshare-googleplus\">Google+<\/span><\/a><\/li>\t\t\t\t\t\t\t\t<li><a href=\"mailto:?subject=Refurbished+Computers+-+ComputerShop.EU:+Configuration+du+pare-feu+pour+les+mises+%C3%A0+jour+Windows+11&amp;body=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fconfiguration-du-pare-feu-pour-les-mises-a-jour-windows-11\" target=\"_blank\" title=\"Share via Email\"><span class=\"quickshare-email\">Email<\/span><\/a><\/li>\t<\/ul>\r\n\t<\/div>\r\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Les mises \u00e0 jour Windows 11 sont essentielles pour la s\u00e9curit\u00e9, les performances et la compatibilit\u00e9. Cependant, souvent, les mises \u00e0 jour \u00e9chouent non pas \u00e0 cause du syst\u00e8me d&#8217;exploitation, mais \u00e0 cause des configurations restrictives des pare-feu et des &hellip; <a href=\"https:\/\/computershop.eu\/blog\/fr\/configuration-du-pare-feu-pour-les-mises-a-jour-windows-11\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":4889,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[178],"tags":[18347,2588,18344,18350,648,819],"class_list":["post-4891","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutoriels","tag-configuration-du-pare-feu","tag-logiciel","tag-mises-a-jour-windows-11","tag-parametres-du-pare-feu","tag-technologie-fr","tag-windows-11-fr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - 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