{"id":400499,"date":"2025-12-16T03:50:00","date_gmt":"2025-12-16T01:50:00","guid":{"rendered":"https:\/\/www.macobserver.com\/non-categorise\/comment-resoudre-les-problemes-dimessage-apres-la-mise-a-jour-ios-26\/"},"modified":"2025-11-05T13:39:29","modified_gmt":"2025-11-05T11:39:29","slug":"comment-resoudre-les-problemes-dimessage-apres-la-mise-a-jour-ios-26","status":"publish","type":"post","link":"https:\/\/www.macobserver.com\/fr\/guide-pratique\/comment-resoudre-les-problemes-dimessage-apres-la-mise-a-jour-ios-26\/","title":{"rendered":"Comment r\u00e9soudre les probl\u00e8mes d&rsquo;iMessage apr\u00e8s la mise \u00e0 jour iOS 26"},"content":{"rendered":"\n<p>De nombreux utilisateurs d&rsquo;iPhone signalent qu&rsquo;iMessage a cess\u00e9 de fonctionner correctement apr\u00e8s l&rsquo;installation d&rsquo;<a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/fr\/recapitulatifs\/devriez-vous-passer-a-ios-26-oui-voici-pourquoi\/\">iOS 26<\/a>, qu&rsquo;Apple a publi\u00e9 le <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/fr\/actualites\/a-quelle-heure-ios-26-sort-il\/\">15 septembre 2025<\/a>. Les probl\u00e8mes vont des \u00e9checs d&rsquo;activation aux interruptions compl\u00e8tes de service. La <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/tous-les-bugs-et-problemes-signales-dios-26-avec-leurs-correctifs\/\">page \u00c9tat du syst\u00e8me<\/a> d&rsquo;Apple indique toujours que tous les services fonctionnent normalement, mais les rapports des utilisateurs racontent une histoire diff\u00e9rente.  <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-new-ios-26-features-in-messages\">Nouvelles fonctionnalit\u00e9s d&rsquo;iOS 26 dans Messages<\/h2>\n\n<p>La <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/news\/ios-26-build-number-23a341\/\">mise \u00e0 jour iOS 26<\/a> a apport\u00e9 des changements majeurs \u00e0 l&rsquo;application Messages :<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"372\" height=\"450\" src=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/image-47.png\" alt=\"nouvelle application messages ios 26\" class=\"wp-image-400208\" style=\"width:450px;height:auto\" srcset=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/image-47.png 372w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/image-47-248x300.png 248w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/image-47-174x210.png 174w\" sizes=\"auto, (max-width: 372px) 100vw, 372px\" \/><\/figure>\n<\/div>\n<ul class=\"wp-block-list\">\n<li><strong>Arri\u00e8re-plans personnalis\u00e9s<\/strong> : D\u00e9finissez des arri\u00e8re-plans de conversation avec des photos, des couleurs, des images g\u00e9n\u00e9r\u00e9es ou des designs pr\u00e9d\u00e9finis comme Ciel, Eau et Aurore.<\/li>\n\n\n\n<li><strong>Discussions de groupe am\u00e9lior\u00e9es<\/strong> : Les indicateurs de frappe montrent qui \u00e9crit, les sondages permettent jusqu&rsquo;\u00e0 12 options, et Apple Cash fonctionne d\u00e9sormais dans les groupes.<\/li>\n\n\n\n<li><strong>S\u00e9lection de message<\/strong> : Copiez une partie d&rsquo;un message au lieu de la bulle enti\u00e8re.<\/li>\n\n\n\n<li><strong>Filtrage des exp\u00e9diteurs inconnus<\/strong> : Les messages de contacts inconnus sont d\u00e9plac\u00e9s vers un dossier s\u00e9par\u00e9 avec des notifications silencieuses.<\/li>\n\n\n\n<li><strong>Design Liquid Glass<\/strong> : Une refonte translucide \u00e0 travers iOS (voir <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/comment-rendre-ios-26-moins-anime\/\">Liquid Glass expliqu\u00e9<\/a>).<\/li>\n<\/ul>\n\n<p>Ces mises \u00e0 jour marquent la plus grande refonte visuelle et fonctionnelle de Messages depuis des ann\u00e9es. Mais la complexit\u00e9 de ces changements a \u00e9galement introduit de nouveaux d\u00e9fis techniques. <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-primary-causes-of-imessage-problems\">Causes principales des probl\u00e8mes d&rsquo;iMessage<\/h2>\n\n<p>M\u00eame dans la version publique, les probl\u00e8mes proviennent de :<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00c9checs de communication serveur<\/strong> (bloquant l&rsquo;activation\/livraison)<\/li>\n\n\n\n<li><strong>Probl\u00e8mes d&rsquo;authentification Apple ID<\/strong> pendant la mise \u00e0 niveau<\/li>\n\n\n\n<li><strong>Corruption de configuration r\u00e9seau<\/strong> (similaire aux <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/decharge-de-la-batterie-ios-26-7-ajustements-eprouves-pour-la-corriger\/\">autres bugs d&rsquo;iOS 26<\/a>)<\/li>\n\n\n\n<li><strong>Incompatibilit\u00e9 des param\u00e8tres op\u00e9rateur<\/strong> avec la nouvelle pile de messagerie d&rsquo;iOS 26<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"h-troubleshooting-imessage-on-ios-26\">D\u00e9pannage d&rsquo;iMessage sur iOS 26<\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"h-1-basic-checks\">1. V\u00e9rifications de base<\/h3>\n\n<ol class=\"wp-block-list\">\n<li><strong>Activation d&rsquo;iMessage<\/strong> : R\u00e9glages \u2192 Apps \u2192 Messages \u2192 activez iMessage. V\u00e9rifiez <strong>Envoyer et recevoir<\/strong> pour confirmer votre num\u00e9ro. <\/li>\n\n\n\n<li><strong>Connexion Apple ID<\/strong> : Assurez-vous d&rsquo;\u00eatre connect\u00e9 au bon Apple ID.<\/li>\n\n\n\n<li><strong>Stabilit\u00e9 r\u00e9seau<\/strong> : Testez le Wi-Fi et les donn\u00e9es mobiles. L&rsquo;activation d&rsquo;iMessage fonctionne mieux en Wi-Fi. <\/li>\n\n\n\n<li><strong>Date et heure<\/strong> : R\u00e9glages \u2192 G\u00e9n\u00e9ral \u2192 Date et heure \u2192 r\u00e9gler automatiquement.<\/li>\n<\/ol>\n\n<p>Si les v\u00e9rifications de base ne r\u00e9solvent pas vos probl\u00e8mes d&rsquo;iMessage, essayez ces \u00e9tapes de d\u00e9pannage avanc\u00e9es. Chacune cible une cause possible diff\u00e9rente d&rsquo;\u00e9chec. <\/p>\n\n<h3 class=\"wp-block-heading\">1. Effectuez une r\u00e9initialisation compl\u00e8te d&rsquo;iMessage<\/h3>\n\n<p>Cela efface les dysfonctionnements qui se produisent pendant le processus de mise \u00e0 jour.<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Ouvrez <strong>R\u00e9glages<\/strong> &gt; <strong>Messages<\/strong>.<\/li>\n\n\n\n<li>D\u00e9sactivez <strong>iMessage<\/strong>.<br \/><img loading=\"lazy\" decoding=\"async\" width=\"760\" height=\"700\" class=\"wp-image-400213\" style=\"width: 400px\" src=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/imessage_off.png\" alt=\"imessage d&#xE9;sactiv&#xE9;\" srcset=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/imessage_off.png 760w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/imessage_off-300x276.png 300w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/imessage_off-228x210.png 228w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/imessage_off-400x368.png 400w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/09\/imessage_off-600x553.png 600w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><\/li>\n\n\n\n<li>Effectuez un red\u00e9marrage forc\u00e9 :\n<ul class=\"wp-block-list\">\n<li>Appuyez sur <strong>Volume +<\/strong>, puis <strong>Volume &#8211;<\/strong>, puis maintenez le <strong>bouton lat\u00e9ral (Alimentation)<\/strong> jusqu&rsquo;\u00e0 voir le logo Apple.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Une fois votre iPhone red\u00e9marr\u00e9, retournez dans <strong>R\u00e9glages<\/strong> &gt; <strong>Messages<\/strong>.<\/li>\n\n\n\n<li>R\u00e9activez <strong>iMessage<\/strong>.<\/li>\n\n\n\n<li>Attendez que le message d&rsquo;activation disparaisse.<\/li>\n<\/ol>\n\n<h3 class=\"wp-block-heading\">2. R\u00e9initialisez les r\u00e9glages r\u00e9seau<\/h3>\n\n<p>Les r\u00e9glages r\u00e9seau corrompus ou obsol\u00e8tes sont une cause fr\u00e9quente des probl\u00e8mes d&rsquo;activation d&rsquo;iMessage.<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Allez dans <strong>R\u00e9glages<\/strong> &gt; <strong>G\u00e9n\u00e9ral<\/strong>.<\/li>\n\n\n\n<li>Faites d\u00e9filer vers le bas et touchez <strong>Transf\u00e9rer ou r\u00e9initialiser l&rsquo;iPhone<\/strong>.<\/li>\n\n\n\n<li>Touchez <strong>R\u00e9initialiser<\/strong>.<\/li>\n\n\n\n<li>S\u00e9lectionnez <strong>R\u00e9initialiser les r\u00e9glages r\u00e9seau<\/strong>.<br \/><img loading=\"lazy\" decoding=\"async\" width=\"971\" height=\"1280\" class=\"wp-image-394416\" style=\"width: 500px\" src=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone.jpeg\" alt=\"r&#xE9;initialiser les r&#xE9;glages r&#xE9;seau sur iPhone\" srcset=\"https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone.jpeg 971w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-228x300.jpeg 228w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-777x1024.jpeg 777w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-768x1012.jpeg 768w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-159x210.jpeg 159w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-400x527.jpeg 400w, https:\/\/www.macobserver.com\/wp-content\/uploads\/2025\/08\/reset-network-settings-iphone-600x791.jpeg 600w\" sizes=\"auto, (max-width: 971px) 100vw, 971px\" \/><\/li>\n\n\n\n<li>Saisissez votre code d&rsquo;acc\u00e8s si demand\u00e9.<\/li>\n\n\n\n<li>Votre iPhone va red\u00e9marrer. Reconnectez-vous au Wi-Fi et testez \u00e0 nouveau iMessage. <\/li>\n<\/ol>\n\n<p>\u26a0\ufe0f Cela supprimera les r\u00e9seaux Wi-Fi enregistr\u00e9s et les r\u00e9glages VPN, assurez-vous donc de conna\u00eetre vos mots de passe.<\/p>\n\n<h3 class=\"wp-block-heading\">3. R\u00e9-authentifiez votre Apple ID<\/h3>\n\n<p>Si votre connexion Apple ID a \u00e9t\u00e9 interrompue pendant la mise \u00e0 jour, iMessage peut \u00e9chouer.<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Ouvrez <strong>r\u00e9glages<\/strong>.<\/li>\n\n\n\n<li>Touchez votre <strong>banni\u00e8re Apple ID<\/strong> en haut.<\/li>\n\n\n\n<li>Faites d\u00e9filer vers le bas et s\u00e9lectionnez <strong>Se d\u00e9connecter<\/strong>.<\/li>\n\n\n\n<li>Red\u00e9marrez votre iPhone.<\/li>\n\n\n\n<li>Retournez dans <strong>R\u00e9glages<\/strong> et reconnectez-vous avec votre Apple ID.<\/li>\n\n\n\n<li>Ouvrez <strong>Messages<\/strong> et activez <strong>iMessage<\/strong>.<\/li>\n<\/ol>\n\n<h3 class=\"wp-block-heading\">4. Mettez \u00e0 jour les r\u00e9glages op\u00e9rateur<\/h3>\n\n<p>Votre op\u00e9rateur peut avoir besoin de transmettre de nouveaux r\u00e9glages pour iOS 26.<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Allez dans <strong>R\u00e9glages<\/strong> &gt; <strong>G\u00e9n\u00e9ral<\/strong> &gt; <strong>Informations<\/strong>.<\/li>\n\n\n\n<li>Restez sur cet \u00e9cran pendant quelques secondes.<\/li>\n\n\n\n<li>Si une mise \u00e0 jour op\u00e9rateur est disponible, vous verrez une invite pour l&rsquo;installer.<\/li>\n\n\n\n<li>Touchez <strong>Mettre \u00e0 jour<\/strong> et suivez les instructions.<\/li>\n<\/ol>\n\n<h3 class=\"wp-block-heading\">5. Essayez la solution de traitement en arri\u00e8re-plan<\/h3>\n\n<p>Cette m\u00e9thode contourne les conflits caus\u00e9s par les t\u00e2ches en arri\u00e8re-plan d&rsquo;iOS 26.<\/p>\n\n<ol class=\"wp-block-list\">\n<li>Balayez vers le bas depuis le coin sup\u00e9rieur droit et activez le <strong>Mode Avion<\/strong>.<\/li>\n\n\n\n<li>En Mode Avion, activez le <strong>Wi-Fi<\/strong> et connectez-vous \u00e0 un r\u00e9seau.<\/li>\n\n\n\n<li>Allez dans <strong>R\u00e9glages<\/strong> &gt; <strong>Messages<\/strong> et activez <strong>iMessage<\/strong>.<\/li>\n\n\n\n<li>Laissez votre iPhone inactif pendant quelques minutes pour qu&rsquo;il traite l&rsquo;activation.<\/li>\n\n\n\n<li>D\u00e9sactivez le <strong>Mode Avion<\/strong> une fois termin\u00e9.<\/li>\n<\/ol>\n\n<p>Pour des probl\u00e8mes d&rsquo;appareil plus larges, consultez notre guide sur <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/tips\/how-to\/ios-26-update-not-showing-up-heres-how-to-fix-it\/\">quand une mise \u00e0 jour iOS 26 n&rsquo;appara\u00eet pas<\/a>.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-common-problems-and-solutions\">Probl\u00e8mes courants et solutions<\/h2>\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Probl\u00e8me<\/th><th>Cause probable<\/th><th>Solution<\/th><\/tr><\/thead><tbody><tr><td>\u00ab En attente d&rsquo;activation \u00bb<\/td><td>Probl\u00e8me de serveur ou d&rsquo;Apple ID<\/td><td>Se d\u00e9connecter\/reconnecter Apple ID, r\u00e9initialiser r\u00e9seau<\/td><\/tr><tr><td>Messages non envoy\u00e9s<\/td><td>Incompatibilit\u00e9 op\u00e9rateur<\/td><td>Mettre \u00e0 jour les r\u00e9glages op\u00e9rateur<\/td><\/tr><tr><td>Images non livr\u00e9es<\/td><td>Corruption r\u00e9seau<\/td><td>R\u00e9initialiser les r\u00e9glages r\u00e9seau<\/td><\/tr><tr><td>\u00c9chec des messages de groupe<\/td><td>Bug li\u00e9 \u00e0 la b\u00eata<\/td><td>Red\u00e9marrage forc\u00e9, appliquer le dernier correctif iOS<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p>Si les probl\u00e8mes de performance s&rsquo;\u00e9tendent au-del\u00e0 de Messages, consultez <a target=\"_blank\" href=\"https:\/\/www.macobserver.com\/fr\/guide-pratique\/tous-les-bugs-et-problemes-signales-dios-26-avec-leurs-correctifs\/\">tous les bugs signal\u00e9s d&rsquo;iOS 26 avec solutions<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>De nombreux utilisateurs d&rsquo;iPhone signalent qu&rsquo;iMessage a cess\u00e9 de fonctionner correctement apr\u00e8s l&rsquo;installation d&rsquo;iOS 26, qu&rsquo;Apple a publi\u00e9 le 15 septembre 2025. Les probl\u00e8mes vont des \u00e9checs d&rsquo;activation aux interruptions compl\u00e8tes de service. La page \u00c9tat du syst\u00e8me d&rsquo;Apple indique toujours que tous les services fonctionnent normalement, mais les rapports des utilisateurs racontent une histoire [&hellip;]<\/p>\n","protected":false},"author":19918,"featured_media":399960,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_metadesc":"Probl\u00e8mes iMessage apr\u00e8s iOS 26 : \u00e9checs d'activation, bugs serveur et messagerie groupe. Solutions et pr\u00e9vention incluses.","footnotes":""},"categories":[82137,82101],"tags":[82233],"work":[],"class_list":["post-400499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide-pratique","category-non-categorise","tag-mises-a-jour-ios-26"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Comment r\u00e9soudre les probl\u00e8mes d&#039;iMessage apr\u00e8s la mise \u00e0 jour iOS 26<\/title>\n<meta name=\"description\" content=\"Probl\u00e8mes iMessage apr\u00e8s iOS 26 : \u00e9checs d&#039;activation, bugs serveur et messagerie groupe. 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