{"id":117552,"date":"2026-02-03T14:03:29","date_gmt":"2026-02-03T14:03:29","guid":{"rendered":"https:\/\/keys.express\/support\/documentation\/erreur-dactivation-de-windows-0x803fa067-ou-0xc004f050\/"},"modified":"2026-02-03T14:03:29","modified_gmt":"2026-02-03T14:03:29","password":"","slug":"erreur-dactivation-de-windows-0x803fa067-ou-0xc004f050","status":"publish","type":"docs","link":"https:\/\/keys.express\/support\/fr\/documentation\/erreur-dactivation-de-windows-0x803fa067-ou-0xc004f050\/","title":{"rendered":"Erreur d&rsquo;activation de Windows 0x803FA067 ou 0xc004f050"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Quelle est la cause du code d&rsquo;erreur 0x803FA067 ou 0xc004f050 ?<\/h3>\n\n<ol class=\"wp-block-list\">\n<li>Les probl\u00e8mes li\u00e9s \u00e0 un serveur d&rsquo;activation surcharg\u00e9 sont g\u00e9n\u00e9ralement r\u00e9solus automatiquement par le syst\u00e8me d&rsquo;exploitation apr\u00e8s un court laps de temps. Si ce n&rsquo;est pas le cas, vous pouvez \u00e0 nouveau proc\u00e9der vous-m\u00eame \u00e0 l&rsquo;activation dans les param\u00e8tres du syst\u00e8me. <\/li>\n\n\n\n<li>L&rsquo;erreur d&rsquo;activation avec le code 0x803FA067 ou 0xc004f050 se produit g\u00e9n\u00e9ralement lors de la mise \u00e0 niveau de Windows Home vers Windows Professional si la cl\u00e9 de licence (Windows Product Key) pour l&rsquo;activation de la version de mise \u00e0 niveau n&rsquo;est pas reconnue. Heureusement, il existe une astuce \u00e9prouv\u00e9e qui permet de contourner et de r\u00e9soudre ce probl\u00e8me &#8211; nous allons vous montrer comment et o\u00f9 ci-dessous. <\/li>\n<\/ol>\n\n<p>Le point de d\u00e9part est l&rsquo;activation de Windows \u00e0 l&rsquo;aide d&rsquo;une cl\u00e9. Une licence Windows n&rsquo;est valable que pour un seul PC et est n\u00e9cessaire pour d\u00e9verrouiller les fonctions correspondantes du syst\u00e8me d&rsquo;exploitation \u00e0 activer sur le PC. Par cons\u00e9quent, une mise \u00e0 niveau de l&rsquo;\u00e9dition Home vers l&rsquo;\u00e9dition Pro de Windows 10 n\u00e9cessite \u00e9galement une activation, car bien que les deux utilisent le m\u00eame support d&rsquo;installation, la cl\u00e9 respective d\u00e9termine \u00e0 elle seule quelles fonctions sont d\u00e9verrouill\u00e9es.  <\/p>\n\n<p>Pour cette mise \u00e0 niveau, vous avez besoin d&rsquo;une cl\u00e9 de produit Windows gratuite et valide. Si celle-ci n&rsquo;est pas reconnue pour une raison quelconque, l&rsquo;erreur d&rsquo;activation 0x803FA067 ou 0xc004f050 se produira. <\/p>\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"572\" height=\"216\" src=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_72aa4f.png\" alt=\"\" class=\"wp-image-110773\" srcset=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_72aa4f.png 572w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_72aa4f-300x113.png 300w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_72aa4f-360x136.png 360w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><\/figure>\n\n<p><\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"700\" height=\"331\" src=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/image-3.png\" alt=\"\" class=\"wp-image-110786\" srcset=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/image-3.png 700w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/image-3-300x142.png 300w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/image-3-360x170.png 360w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n<p><a href=\"https:\/\/keys.express\/support\/fr\/documentation\/mettre-a-niveau-win11-home-vers-pro\/\">Solution 1 : Cl\u00e9 g\u00e9n\u00e9rique  <\/a><\/p>\n\n<p>La proc\u00e9dure de mise \u00e0 niveau de Windows 10 Home vers Windows 10 Home est la m\u00eame que celle de Windows 11 Home vers Windows 10 Pro. Veuillez lire l&rsquo;int\u00e9gralit\u00e9 des instructions et les enregistrer sous forme d&rsquo;image ou de capture d&rsquo;\u00e9cran, car votre connexion internet sera interrompue pendant le processus. Assurez-vous \u00e9galement que votre Windows Home est \u00e0 jour en installant toutes les mises \u00e0 jour dans Windows Home. Il est \u00e9galement recommand\u00e9 de d\u00e9sactiver votre antivirus pour le processus, car il peut produire un message d&rsquo;erreur.   <\/p>\n\n<p>Assurez-vous que le PC n&rsquo;est pas d\u00e9connect\u00e9 de l&rsquo;alimentation \u00e9lectrique pendant le processus de mise \u00e0 jour.<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Connectez-vous avec un compte disposant de droits d&rsquo;administrateur.<\/li>\n\n\n\n<li>Ouvrez les param\u00e8tres de Windows.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0R\u00e9seau et Internet\u00a0\u00bb.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0Changez les options de l&rsquo;adaptateur\u00a0\u00bb.<\/li>\n\n\n\n<li>D\u00e9sactivez toutes les cartes r\u00e9seau affich\u00e9es en cliquant dessus avec le bouton droit de la souris et en s\u00e9lectionnant \u00ab\u00a0D\u00e9sactiver\u00a0\u00bb.<\/li>\n\n\n\n<li>Fermez tous les menus.<\/li>\n\n\n\n<li>Ouvrez les param\u00e8tres de Windows.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0Mise \u00e0 jour et s\u00e9curit\u00e9\u00a0\u00bb.<\/li>\n\n\n\n<li>S\u00e9lectionnez \u00ab\u00a0Activation\u00a0\u00bb sur le c\u00f4t\u00e9 gauche.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0Modifier la cl\u00e9 du produit\u00a0\u00bb.<\/li>\n\n\n\n<li>Entrez la cl\u00e9 \u00ab\u00a0VK7JG-NPHTM-C97JM-9MPGT-3V66T\u00a0\u00bb et cliquez sur continuer.<\/li>\n\n\n\n<li>Lancez le processus de mise \u00e0 niveau.<\/li>\n\n\n\n<li>Attendez que la mise \u00e0 niveau soit termin\u00e9e. L&rsquo;ordinateur red\u00e9marre pendant la mise \u00e0 niveau. <\/li>\n\n\n\n<li>Ouvrez les param\u00e8tres de Windows.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0R\u00e9seau et Internet\u00a0\u00bb.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0Changez les options de l&rsquo;adaptateur\u00a0\u00bb.<\/li>\n\n\n\n<li>Activez toutes les cartes r\u00e9seau que vous avez d\u00e9sactiv\u00e9es \u00e0 l&rsquo;\u00e9tape 4 en cliquant dessus avec le bouton droit de la souris et en s\u00e9lectionnant \u00ab\u00a0D\u00e9sactiver\u00a0\u00bb.<\/li>\n\n\n\n<li>Fermez tous les menus.<\/li>\n\n\n\n<li>Ouvrez les param\u00e8tres de Windows.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0Mise \u00e0 jour et s\u00e9curit\u00e9\u00a0\u00bb.<\/li>\n\n\n\n<li>S\u00e9lectionnez \u00ab\u00a0Activation\u00a0\u00bb sur le c\u00f4t\u00e9 gauche.<\/li>\n\n\n\n<li>Cliquez sur \u00ab\u00a0Modifier la cl\u00e9 du produit\u00a0\u00bb.<\/li>\n\n\n\n<li>Assurez-vous que l&rsquo;\u00e9dition de Windows est pass\u00e9e \u00e0 la version professionnelle.<\/li>\n\n\n\n<li>Saisissez une cl\u00e9 d&rsquo;activation valide de Windows 10 Pro et cliquez sur Continuer.<\/li>\n<\/ol>\n\n<h3 class=\"wp-block-heading\">Solution 2 : Activation hors ligne (astuce \u00e9prouv\u00e9e !)<\/h3>\n\n<p>Comme nous l&rsquo;avons d\u00e9j\u00e0 mentionn\u00e9, ce probl\u00e8me peut \u00eatre r\u00e9solu tr\u00e8s facilement en utilisant une petite astuce et (aussi paradoxal que cela puisse para\u00eetre) en effectuant l&rsquo;activation hors ligne. Pour ce faire, proc\u00e9dez comme suit : <\/p>\n\n<ol class=\"wp-block-list\">\n<li>Ouvrez les <strong>param\u00e8tres Windows<\/strong> et allez dans <strong>Update &amp; Security &gt; Activation &gt; Change product key.<\/strong><\/li>\n<\/ol>\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"712\" src=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_86257d-1-1024x712.png\" alt=\"\" class=\"wp-image-110812\" srcset=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_86257d-1-1024x712.png 1024w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_86257d-1-300x209.png 300w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_86257d-1-768x534.png 768w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_86257d-1-360x250.png 360w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_86257d-1.png 1199w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<ol start=\"2\" style=\"list-style-type:1\" class=\"wp-block-list\">\n<li>Dans la fen\u00eatre suivante, entrez la cl\u00e9 de licence que vous avez re\u00e7ue lors de l&rsquo;achat de la version Pro. Ne cliquez sur rien d&rsquo;autre ! <\/li>\n\n\n\n<li>Maintenant, AVANT de cliquer sur \u00ab\u00a0D\u00e9marrer\u00a0\u00bb, d\u00e9connectez votre connexion r\u00e9seau.<\/li>\n\n\n\n<li>Appuyez maintenant sur D\u00e9marrer et laissez la mise \u00e0 niveau s&rsquo;effectuer. Apr\u00e8s avoir red\u00e9marr\u00e9 le syst\u00e8me, les fonctionnalit\u00e9s Pro devraient \u00eatre activ\u00e9es sans message d&rsquo;erreur 0x803FA067. <\/li>\n<\/ol>\n\n<h3 class=\"wp-block-heading\">Solution 3 : Activation par t\u00e9l\u00e9phone<\/h3>\n\n<p>Ce que beaucoup ignorent : Windows peut toujours \u00eatre activ\u00e9 par t\u00e9l\u00e9phone. Ainsi, si l&rsquo;activation en ligne conventionnelle \u00e9choue et que l&rsquo;astuce de la d\u00e9connexion du r\u00e9seau ne fonctionne pas \u00e0 long terme, vous pouvez effectuer la mise \u00e0 niveau par t\u00e9l\u00e9phone. Pour ce faire, proc\u00e9dez comme suit :  <\/p>\n\n<ol class=\"wp-block-list\">\n<li>Ouvrez l&rsquo;invite de commande de Windows (recherchez-la dans le menu D\u00e9marrer ou appuyez sur [Win]+[R] et entrez \u00ab\u00a0cmd\u00a0\u00bb dans la barre d&rsquo;ex\u00e9cution).<\/li>\n\n\n\n<li>Entrez la commande \u00ab\u00a0slui 4\u00a0\u00bb et confirmez avec [Enter].<\/li>\n\n\n\n<li>Apr\u00e8s avoir s\u00e9lectionn\u00e9 votre pays, une fen\u00eatre s&rsquo;affiche et vous indique deux num\u00e9ros de t\u00e9l\u00e9phone. Toutefois, le num\u00e9ro gratuit ne peut \u00eatre appel\u00e9 qu&rsquo;\u00e0 partir d&rsquo;une ligne fixe. <\/li>\n<\/ol>\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"413\" src=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_d2d311.png\" alt=\"\" class=\"wp-image-110840\" srcset=\"https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_d2d311.png 640w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_d2d311-300x194.png 300w, https:\/\/keys.express\/support\/wp-content\/uploads\/2025\/01\/Snag_d2d311-360x232.png 360w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n<p>4. Vous serez alors connect\u00e9 \u00e0 un ordinateur vocal qui vous demandera de saisir l&rsquo;identifiant d&rsquo;installation affich\u00e9 dans la fen\u00eatre sur le clavier de votre t\u00e9l\u00e9phone.<br\/>5. Vous recevrez ensuite un identifiant de confirmation que vous devrez saisir sur votre PC. Enfin, Windows 10 Pro Edition sera activ\u00e9. <\/p>\n\n<h3 class=\"wp-block-heading\">Solution 4 : Portail d&rsquo;activation Microsoft<\/h3>\n\n<p>Si l&rsquo;activation par t\u00e9l\u00e9phone n&rsquo;est plus disponible dans votre pays, veuillez utiliser le portail d&rsquo;activation de Microsoft. Vous trouverez le portail d&rsquo;activation de Microsoft ici <a href=\"https:\/\/visualsupport.microsoft.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">: https:\/\/visualsupport.microsoft.com\/<\/a> ou <a href=\"https:\/\/aka.ms\/aoh\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/aka.ms\/aoh.<\/a> <br\/>Connectez-vous avec votre compte Microsoft ou cr\u00e9ez-en un. Suivez ensuite les instructions \u00e0 l&rsquo;\u00e9cran pour activer le logiciel.  <\/p>\n\n<p>Si vous avez d&rsquo;autres questions ou probl\u00e8mes, nous nous ferons un plaisir de vous aider. Veuillez utiliser notre <a href=\"https:\/\/keys.express\/EN\/contact-us\">formulaire de contact<\/a>. <\/p>\n\n<p>Votre \u00e9quipe Keys.Express<\/p>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quelle est la cause du code d&rsquo;erreur 0x803FA067 ou 0xc004f050 ? Le point de d\u00e9part est l&rsquo;activation de Windows \u00e0 l&rsquo;aide d&rsquo;une cl\u00e9. Une licence Windows n&rsquo;est valable que pour un seul PC et est n\u00e9cessaire pour d\u00e9verrouiller les fonctions correspondantes du syst\u00e8me d&rsquo;exploitation \u00e0 activer sur le PC. Par cons\u00e9quent, une mise \u00e0 niveau [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"doc_category":[346],"doc_tag":[195],"knowledge_base":[196],"class_list":["post-117552","docs","type-docs","status-publish","hentry","doc_category-systemes-dexploitation","doc_tag-aktivierung-fr","knowledge_base-service-client"],"acf":[],"year_month":"2026-06","word_count":977,"total_views":"400","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Gerhard Latzelsberger","author_nicename":"gerhard-latzelsberger","author_url":"https:\/\/keys.express\/support\/fr\/author\/gerhard-latzelsberger\/"},"doc_category_info":[{"term_name":"Syst\u00e8mes d'exploitation","term_url":"https:\/\/keys.express\/support\/fr\/docs\/non-knowledgebase\/systemes-dexploitation\/"}],"doc_tag_info":[{"term_name":"Aktivierung","term_url":"https:\/\/keys.express\/support\/fr\/docs-tag\/aktivierung-fr\/"}],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Erreur d&#039;activation de Windows 0x803FA067 ou 0xc004f050 - Keys Support<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/keys.express\/support\/fr\/documentation\/erreur-dactivation-de-windows-0x803fa067-ou-0xc004f050\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Erreur d&#039;activation de Windows 0x803FA067 ou 0xc004f050 - Keys Support\" \/>\n<meta property=\"og:description\" content=\"Quelle est la cause du code d&rsquo;erreur 0x803FA067 ou 0xc004f050 ? Le point de d\u00e9part est l&rsquo;activation de Windows \u00e0 l&rsquo;aide d&rsquo;une cl\u00e9. Une licence Windows n&rsquo;est valable que pour un seul PC et est n\u00e9cessaire pour d\u00e9verrouiller les fonctions correspondantes du syst\u00e8me d&rsquo;exploitation \u00e0 activer sur le PC. 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