{"id":4185,"date":"2026-04-22T09:06:01","date_gmt":"2026-04-22T07:06:01","guid":{"rendered":"https:\/\/computershop.eu\/blog\/?p=4174"},"modified":"2026-04-22T09:18:37","modified_gmt":"2026-04-22T07:18:37","slug":"demarrage-securise-sous-windows-mise-a-jour-davril-2026","status":"publish","type":"post","link":"https:\/\/computershop.eu\/blog\/fr\/demarrage-securise-sous-windows-mise-a-jour-davril-2026","title":{"rendered":"D\u00e9marrage s\u00e9curis\u00e9 sous Windows: mise \u00e0 jour d&#8217;avril 2026"},"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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<p>La s\u00e9curit\u00e9 du syst\u00e8me d&#8217;exploitation est plus importante que jamais, et Microsoft continue d&#8217;am\u00e9liorer la protection des utilisateurs de Windows 11 et Windows 10. L&#8217;une des fonctions de s\u00e9curit\u00e9 les plus importantes est Secure Boot, un m\u00e9canisme essentiel qui prot\u00e8ge l&#8217;ordinateur contre les logiciels malveillants de type <a href=\"https:\/\/www.malwarebytes.com\/blog\/detections\/bootkit\" target=\"_blank\" rel=\"noreferrer noopener\">bootkit<\/a>, une menace dangereuse qui s&#8217;active avant m\u00eame le d\u00e9marrage du syst\u00e8me d&#8217;exploitation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu&#8217;est-ce que Secure Boot et pourquoi est-il important ?<\/h2>\n\n\n\n<p>Secure Boot est une fonction int\u00e9gr\u00e9e au micrologiciel du syst\u00e8me (UEFI) qui permet de d\u00e9marrer uniquement les composants logiciels de confiance. En pratique, elle bloque tout code malveillant qui tenterait de s&#8217;ex\u00e9cuter au d\u00e9marrage du PC. Contrairement aux solutions antivirus habituelles, cette protection agit avant le chargement de Windows, offrant ainsi un niveau de protection suppl\u00e9mentaire.<\/p>\n\n\n\n<p>Cette fonctionnalit\u00e9 devient encore plus importante dans le contexte o\u00f9 les anciens certificats Secure Boot doivent expirer en juin. S&#8217;ils ne sont pas mis \u00e0 jour, votre syst\u00e8me peut devenir vuln\u00e9rable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nouveaut\u00e9s : comment v\u00e9rifier le statut de Secure Boot sous Windows<\/h2>\n\n\n\n<p>Avec les mises \u00e0 jour d&#8217;avril (Patch Tuesday), Microsoft a introduit une m\u00e9thode simple et visuelle pour v\u00e9rifier l&#8217;\u00e9tat de la fonction de s\u00e9curit\u00e9 directement depuis le syst\u00e8me.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comment acc\u00e9der aux informations :<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sous Windows 11 : Param\u00e8tres \u2192 Confidentialit\u00e9 et s\u00e9curit\u00e9 \u2192 S\u00e9curit\u00e9 Windows \u2192 S\u00e9curit\u00e9 des appareils<\/li>\n\n\n\n<li>Sous Windows 10 : Param\u00e8tres \u2192 Mise \u00e0 jour et s\u00e9curit\u00e9 \u2192 S\u00e9curit\u00e9 Windows \u2192 S\u00e9curit\u00e9 des appareils<\/li>\n<\/ul>\n\n\n\n<p>Ensuite, faites d\u00e9filer jusqu&#8217;\u00e0 la section Secure Boot.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Signification des couleurs<\/h2>\n\n\n\n<p>Microsoft a mis en place un syst\u00e8me d&#8217;indicateurs visuels pour simplifier la compr\u00e9hension du statut :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vert<\/strong> &#8211; Le syst\u00e8me est prot\u00e9g\u00e9, aucune action n&#8217;est n\u00e9cessaire<\/li>\n\n\n\n<li><strong>Jaune<\/strong> &#8211; Il y a des recommandations de s\u00e9curit\u00e9<\/li>\n\n\n\n<li><strong>Rouge<\/strong> &#8211; Une intervention imm\u00e9diate est n\u00e9cessaire.<\/li>\n<\/ul>\n\n\n\n<p>Cependant, m\u00eame si vous voyez la couleur verte, cela ne signifie pas automatiquement que tout est parfait. Le message associ\u00e9 \u00e0 l&#8217;ic\u00f4ne fournit des d\u00e9tails suppl\u00e9mentaires.<\/p>\n\n\n\n<p>Par exemple :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Un syst\u00e8me peut afficher le vert, mais utiliser des certificats anciens qui n\u00e9cessitent une mise \u00e0 jour<\/li>\n\n\n\n<li>Un syst\u00e8me enti\u00e8rement mis \u00e0 jour confirmera que tous les certificats n\u00e9cessaires sont install\u00e9s.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Comment mettre \u00e0 jour les certificats Secure Boot<\/h2>\n\n\n\n<p>Pour vous assurer que votre PC est enti\u00e8rement prot\u00e9g\u00e9, vous devez installer les derni\u00e8res mises \u00e0 jour de Windows.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00c9tapes simples :<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Acc\u00e9dez \u00e0 Windows Update depuis les Param\u00e8tres<\/li>\n\n\n\n<li>Cliquez sur \u00ab Rechercher des mises \u00e0 jour \u00bb<\/li>\n\n\n\n<li>Installez toutes les mises \u00e0 jour disponibles<\/li>\n\n\n\n<li>Red\u00e9marrez le syst\u00e8me et v\u00e9rifiez \u00e0 nouveau Secure Boot.<\/li>\n<\/ul>\n\n\n\n<p>La mise \u00e0 jour des certificats est essentielle car, apr\u00e8s l&#8217;expiration des anciens, la fonction ne pourra plus prot\u00e9ger efficacement le syst\u00e8me.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les mises \u00e0 jour d&#8217;avril<\/h2>\n\n\n\n<p>Outre les am\u00e9liorations apport\u00e9es \u00e0 cette fonction, les mises \u00e0 jour r\u00e9centes incluent \u00e9galement un nombre impressionnant de correctifs de s\u00e9curit\u00e9 :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>164 vuln\u00e9rabilit\u00e9s r\u00e9solues<\/li>\n\n\n\n<li>8 probl\u00e8mes critiques<\/li>\n\n\n\n<li>2 vuln\u00e9rabilit\u00e9s de type zero-day.<\/li>\n<\/ul>\n\n\n\n<p>Ces chiffres soulignent l&#8217;importance de maintenir votre syst\u00e8me \u00e0 jour. Les experts en s\u00e9curit\u00e9 recommandent l&#8217;installation imm\u00e9diate de ces correctifs pour \u00e9viter les risques majeurs.<\/p>\n\n\n\n<p>Secure Boot est un composant essentiel pour la s\u00e9curit\u00e9 de votre PC, et la mise \u00e0 jour des certificats n&#8217;est pas une option, mais une n\u00e9cessit\u00e9. Les nouvelles fonctionnalit\u00e9s introduites par Microsoft facilitent la v\u00e9rification du statut, mais la responsabilit\u00e9 finale incombe \u00e0 l&#8217;utilisateur.<\/p>\n\n\n\n<p>Si vous utilisez Windows 10 ou <a href=\"https:\/\/computershop.eu\/blog\/fr\/comment-verifier-les-specifications-dun-pc-dans-windows-11\" target=\"_blank\" rel=\"noreferrer noopener\">Windows 11<\/a>, assurez-vous d&#8217;avoir install\u00e9 les derni\u00e8res mises \u00e0 jour et v\u00e9rifiez r\u00e9guli\u00e8rement le statut de Secure Boot. Dans un paysage num\u00e9rique de plus en plus dangereux, la pr\u00e9vention est la meilleure forme de protection.<\/p>\n\n\n\n<p>Source: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/secure-boot-certificate-update-status-in-the-windows-security-app-5ce39986-7dd2-4852-8c21-ef30dd04f046\" target=\"_blank\" rel=\"noreferrer noopener\">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%2Fdemarrage-securise-sous-windows-mise-a-jour-davril-2026&amp;t=D%C3%A9marrage+s%C3%A9curis%C3%A9+sous+Windows%3A+mise+%C3%A0+jour+d%26%238217%3Bavril+2026+<+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%2Fdemarrage-securise-sous-windows-mise-a-jour-davril-2026&amp;text=D%C3%A9marrage+s%C3%A9curis%C3%A9+sous+Windows%3A+mise+%C3%A0+jour+d%26%238217%3Bavril+2026+<+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%2Fdemarrage-securise-sous-windows-mise-a-jour-davril-2026&amp;media=https%3A%2F%2Fcomputershop.eu%2Fblog%2Fwp-content%2Fuploads%2F2026%2F04%2FWindows-Secure-Boot-300x168.png&amp;description=La+s%C3%A9curit%C3%A9+du+syst%C3%A8me+d%27exploitation+est+plus+importante+que+jamais%2C+et+Microsoft+continue+d%27am%C3%A9liorer+la+protection+des+utilisateurs+de+Windows+11+et+Windows+10.+L%27une+des+fonctions+de+s%C3%A9curit%C3%A9+les+plus+importantes+est+Secure+Boot%2C+un+m%C3%A9canisme+essentiel+qui+prot%C3%A8ge%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%2Fdemarrage-securise-sous-windows-mise-a-jour-davril-2026&amp;title=D%C3%A9marrage+s%C3%A9curis%C3%A9+sous+Windows%3A+mise+%C3%A0+jour+d%26%238217%3Bavril+2026&amp;source=Refurbished+Computers+-+ComputerShop.EU&amp;summary=La+s%C3%A9curit%C3%A9+du+syst%C3%A8me+d%27exploitation+est+plus+importante+que+jamais%2C+et+Microsoft+continue+d%27am%C3%A9liorer+la+protection+des+utilisateurs+de+Windows+11+et+Windows+10.+L%27une+des+fonctions+de+s%C3%A9curit%C3%A9+les+plus+importantes+est+Secure+Boot%2C+un+m%C3%A9canisme+essentiel+qui+prot%C3%A8ge%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%2Fdemarrage-securise-sous-windows-mise-a-jour-davril-2026\" 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:+D%C3%A9marrage+s%C3%A9curis%C3%A9+sous+Windows%3A+mise+%C3%A0+jour+d%26%238217%3Bavril+2026&amp;body=https%3A%2F%2Fcomputershop.eu%2Fblog%2Ffr%2Fdemarrage-securise-sous-windows-mise-a-jour-davril-2026\" 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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>La s\u00e9curit\u00e9 du syst\u00e8me d&#8217;exploitation est plus importante que jamais, et Microsoft continue d&#8217;am\u00e9liorer la protection des utilisateurs de Windows 11 et Windows 10. L&#8217;une des fonctions de s\u00e9curit\u00e9 les plus importantes est Secure Boot, un m\u00e9canisme essentiel qui prot\u00e8ge &hellip; <a href=\"https:\/\/computershop.eu\/blog\/fr\/demarrage-securise-sous-windows-mise-a-jour-davril-2026\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":4182,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[103],"tags":[15633,2588,645,7518,4233,15636,15639,2500,15680],"class_list":["post-4185","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouvelles","tag-demarrage-securise","tag-logiciel","tag-pc-fr","tag-protection-des-donnees","tag-securite-informatique","tag-securite-pc","tag-securite-windows","tag-windows-10-fr","tag-windows11-fr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>D\u00e9marrage s\u00e9curis\u00e9 sous Windows: mise \u00e0 jour d&#039;avril 2026 - Refurbished Computers - ComputerShop.EU<\/title>\n<meta name=\"description\" content=\"La derni\u00e8re mise \u00e0 jour de Microsoft am\u00e9liore la fonction de s\u00e9curit\u00e9 du Windows D\u00e9marrage s\u00e9curis\u00e9. 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