{"id":13029,"date":"2026-10-02T02:05:33","date_gmt":"2026-10-01T17:05:33","guid":{"rendered":"https:\/\/happytech.jp\/wordpress\/?p=13029"},"modified":"2026-10-02T02:05:33","modified_gmt":"2026-10-01T17:05:33","slug":"windows-11-26h2-update","status":"publish","type":"post","link":"https:\/\/happytech.jp\/wordpress\/2026\/10\/02\/windows-11-26h2-update\/","title":{"rendered":"Windows 11 26H2\u66f4\u65b0"},"content":{"rendered":"<figure id=\"attachment_13030\" aria-describedby=\"caption-attachment-13030\" style=\"width: 970px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-13030\" src=\"https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0.png\" alt=\"Windows 11 25H2\u304b\u308926H2\u3078\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\" width=\"970\" height=\"271\" srcset=\"https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0.png 970w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0-300x84.png 300w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0-768x215.png 768w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0-360x101.png 360w\" sizes=\"auto, (max-width: 970px) 100vw, 970px\" \/><figcaption id=\"caption-attachment-13030\" class=\"wp-caption-text\">Windows 11 25H2\u304b\u308926H2\u3078\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/figcaption><\/figure>\n<p><span lang=\"en-US\">9<\/span>\u6708<span lang=\"en-US\">30<\/span>\u65e5\u671d<span lang=\"en-US\">8<\/span>\u6642\u3044\u3064\u3082\u306e<span lang=\"en-US\">Win Update<\/span>\u3092\u884c\u3046\u3068\u3001\u300c<span lang=\"en-US\">26H2<\/span>\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u300d\u304c\u8868\u793a\u3055\u308c<span lang=\"en-US\">25H2<\/span>\u304b\u3089<span lang=\"en-US\">26H2<\/span>\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306b\u6210\u529f\u3057\u307e\u3057\u305f\u3002\u5f53\u8a72<span lang=\"en-US\">Win11<\/span>\u306f\u300c<span lang=\"en-US\">2028<\/span>\u5e74<span lang=\"en-US\">10<\/span>\u6708\u307e\u3067\u30b5\u30dd\u30fc\u30c8\u5ef6\u9577\u300d\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n<h3>\u7dca\u6025\u7684<span lang=\"en-US\">Win11 26H2<\/span>\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/h3>\n<figure id=\"attachment_13031\" aria-describedby=\"caption-attachment-13031\" style=\"width: 769px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-13031\" src=\"https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/2ea6b99c8b9139e7a264c569231c320f-769x1024.png\" alt=\"Windows 11 25H2\u304b\u308926H2\u3078\u306e\u624b\u9806\" width=\"769\" height=\"1024\" srcset=\"https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/2ea6b99c8b9139e7a264c569231c320f-769x1024.png 769w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/2ea6b99c8b9139e7a264c569231c320f-225x300.png 225w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/2ea6b99c8b9139e7a264c569231c320f-768x1022.png 768w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/2ea6b99c8b9139e7a264c569231c320f-203x270.png 203w, https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/2ea6b99c8b9139e7a264c569231c320f.png 970w\" sizes=\"auto, (max-width: 769px) 100vw, 769px\" \/><figcaption id=\"caption-attachment-13031\" class=\"wp-caption-text\">Windows 11 25H2\u304b\u308926H2\u3078\u306e\u624b\u9806<\/figcaption><\/figure>\n<p>\u6700\u8fd1\u306e<span lang=\"en-US\">Win Update<\/span>\u306f\u3001<a href=\"https:\/\/happytech.jp\/wordpress\/2026\/01\/02\/2026-security-update-schedule-and-win11-new-insights\/\" target=\"_blank\" rel=\"noopener\">\u6708\u4f8b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb<\/a>\u3068\u7121\u95a2\u4fc2<span lang=\"en-US\">(?!)<\/span>\u306b\u3001\u968f\u6642<span lang=\"en-US\">\/<\/span>\u7a81\u7136<span lang=\"en-US\">Update<\/span>\u914d\u5e03\u304c\u59cb\u307e\u308a\u307e\u3059\u3002\u65e2\u306b\u914d\u5e03\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u7dca\u6025\u914d\u5e03\u304c\u5fc5\u8981\u306a\u307b\u3069\u91cd\u5927\u306a\u30d0\u30b0\u304c\u3042\u308b\u304b\u3089\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u4eca\u56de\u3082\u307e\u305f\u304b\u3001\u3068\u601d\u3044\u898b\u308b\u3068<span lang=\"en-US\">26H2<\/span>\u914d\u5e03\u3067\u3057\u305f\u3002<\/p>\n<p><a href=\"https:\/\/pc.watch.impress.co.jp\/docs\/topic\/feature\/2144347.html\" target=\"_blank\" rel=\"noopener\">\u30b3\u30c1\u30e9<\/a>\u306e\u8a18\u4e8b\u306b\u3088\u308b\u3068\u3001\u65b0\u3057\u3044<span lang=\"en-US\">26H2<\/span>\u306f<span lang=\"en-US\">25H2<\/span>\u304b\u3089\u306e\u5909\u5316\u306f\u5c11\u306a\u3044\u305d\u3046\u3067\u3059\u3002\u3067\u306f\u3001<strong>\u300c\u306a\u305c\u7dca\u6025\u7684\u306b<span lang=\"en-US\">26H2<\/span>\u3092\u914d\u5e03\u3057\u305f\u304b\u7591\u554f\u300d<\/strong>\u3067\u3059\u3002\u66ab\u304f\u69d8\u5b50\u3092\u898b\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<h3><span lang=\"en-US\">Office 2021<\/span>\u3082<span lang=\"en-US\">10<\/span>\u6708<span lang=\"en-US\">9<\/span>\u65e5\u307e\u3067<\/h3>\n<p>\u73fe\u5728\u30b5\u30fc\u30d3\u30b9\u4e2d\u306e\u300c\u8cb7\u5207\u308a<span lang=\"en-US\">Office 2021<\/span>\u3082\u4eca\u5e74<span lang=\"en-US\">10<\/span>\u6708<span lang=\"en-US\">13<\/span>\u65e5\u3067\u30b5\u30dd\u30fc\u30c8\u7d42\u4e86\u300d\u3067\u3059\u3002\u8cb7\u5207\u308a<span lang=\"en-US\">Office 2024<\/span>\uff08<span lang=\"en-US\">2029<\/span>\u5e74<span lang=\"en-US\">10<\/span>\u6708\u307e\u3067\u30b5\u30dd\u30fc\u30c8\uff09\u3001\u307e\u305f\u306f\u3001\u30af\u30e9\u30a6\u30c9<span lang=\"en-US\">Office 365<\/span>\uff08\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u578b\u30b5\u30dd\u30fc\u30c8\uff09\u3078\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><span lang=\"en-US\">Office 2021<\/span>\u4ee5\u964d\u3001\u5f93\u6765\u306e\u8cb7\u5207\u308a<span lang=\"en-US\">Office<\/span>\u306b\u3042\u3063\u305f\u5ef6\u9577\u30b5\u30dd\u30fc\u30c8\u304c\u5ec3\u6b62\u3055\u308c\u767a\u58f2\u5f8c<span lang=\"en-US\">5<\/span>\u5e74\u3067\u30b5\u30fc\u30d3\u30b9\u3082\u7d42\u308f\u308a\u307e\u3059\u3002<\/p>\n<h2><span lang=\"en-US\">Summary<\/span>\uff1a<span lang=\"en-US\">Windows 11 26H2<\/span>\u66f4\u65b0<\/h2>\n<p>\u65e5\u672c\u6642\u9593<span lang=\"en-US\">9<\/span>\u6708<span lang=\"en-US\">30<\/span>\u65e5\u671d\u3001\u7dca\u6025\u7684\u306b<span lang=\"en-US\">Windows 11 26H2<\/span>\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u914d\u5e03\u304c\u59cb\u307e\u308a\u307e\u3057\u305f\u3002\u6bb5\u968e\u914d\u5e03\u3067\u3059\u304c\u3001<a href=\"https:\/\/happytech.jp\/wordpress\/2026\/06\/12\/the-aftermath-of-old-boot-trusted-pcs\/\" target=\"_blank\" rel=\"noopener\">\u5f0a\u793e<span lang=\"en-US\">4PC<\/span><\/a>\u4e2d<span lang=\"en-US\">2<\/span>\u53f0\u306e<span lang=\"en-US\">Win11 25H2<\/span>\u306f\u3001<span lang=\"en-US\">26H2<\/span>\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u7121\u4e8b\u5b8c\u4e86\u3057\u3001\u672c\u65e5\u6642\u70b9\u3067<span lang=\"en-US\">2<\/span>\u53f0\u3068\u3082\u5b89\u5b9a\u52d5\u4f5c\u4e2d\u3067\u3059\u3002<\/p>\n<p>\u6b8b\u308a<span lang=\"en-US\">2<\/span>\u53f0\u306e<span lang=\"en-US\">Win11 25H2<\/span>\u306f\u3001<span lang=\"en-US\">10<\/span>\u6708\u306e\u6708\u4f8b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\uff08<span lang=\"en-US\">10<\/span>\u6708<span lang=\"en-US\">14<\/span>\u65e5\uff09\u307e\u3067\u5f85\u3063\u3066<span lang=\"en-US\">26H2<\/span>\u66f4\u65b0\u3092\u884c\u3046\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<p><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block; text-align: center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-6224202239761885\" data-ad-slot=\"3310976040\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u65e5\u672c\u6642\u95939\u670830\u65e5\u671d\u3001\u7dca\u6025\u7684\u306bWindows 11 26H2\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u914d\u5e03\u958b\u59cb\u3002\u5f0a\u793e4PC\u4e2d2\u53f0\u306eWin11 25H2\u306f26H2\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u7121\u4e8b\u5b8c\u4e86\u30572\u53f0\u3068\u3082\u5b89\u5b9a\u52d5\u4f5c\u4e2d\u3002\u6b8b\u308a\u306ePC\u306f\u300110\u6708\u4f8b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\uff0810\u670814\u65e5\uff09\u307e\u3067\u5f85\u3063\u306626H2\u66f4\u65b0\u306e\u4e88\u5b9a\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[448,591],"tags":[559,926,1033,1181,1182],"class_list":["post-13029","post","type-post","status-publish","format-standard","hentry","category-windows","category-pc","tag-office-365","tag-office-2024","tag-windows-11-25h2","tag-windows-11-26h2","tag-office-2021"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Windows 11 26H2\u66f4\u65b0 - IoT MCU\u306eHappyTech<\/title>\n<meta name=\"description\" content=\"\u65e5\u672c\u6642\u95939\u670830\u65e5\u671d\u3001\u7dca\u6025\u7684\u306bWindows 11 26H2\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u914d\u5e03\u958b\u59cb\u3002\u5f0a\u793e4PC\u4e2d2\u53f0\u306eWin11 25H2\u306f26H2\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u7121\u4e8b\u5b8c\u4e86\u30572\u53f0\u3068\u3082\u5b89\u5b9a\u52d5\u4f5c\u4e2d\u3002\u6b8b\u308a\u306ePC\u306f\u300110\u6708\u4f8b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\uff0810\u670814\u65e5\uff09\u307e\u3067\u5f85\u3063\u306626H2\u66f4\u65b0\u306e\u4e88\u5b9a\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/happytech.jp\/wordpress\/2026\/10\/02\/windows-11-26h2-update\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Windows 11 26H2\u66f4\u65b0 - IoT MCU\u306eHappyTech\" 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content=\"https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0.png\" \/>\n\t<meta property=\"og:image:width\" content=\"970\" \/>\n\t<meta property=\"og:image:height\" content=\"271\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"WithHappy\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Windows 11 26H2\u66f4\u65b0\" \/>\n<meta name=\"twitter:description\" content=\"\u65e5\u672c\u6642\u95939\u670830\u65e5\u671d\u3001\u7dca\u6025\u7684\u306bWindows 11 26H2\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u914d\u5e03\u958b\u59cb\u3002\u5f0a\u793e4PC\u4e2d2\u53f0\u306eWin11 25H2\u306f26H2\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u7121\u4e8b\u5b8c\u4e86\u30572\u53f0\u3068\u3082\u5b89\u5b9a\u52d5\u4f5c\u4e2d\u3002\u6b8b\u308a\u306ePC\u306f\u300110\u6708\u4f8b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\uff0810\u670814\u65e5\uff09\u307e\u3067\u5f85\u3063\u306626H2\u66f4\u65b0\u306e\u4e88\u5b9a\u3002\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/happytech.jp\/wordpress\/wp-content\/uploads\/2026\/10\/7c917d28bcf131990bb953a0f9bacaf0.png\" \/>\n<meta name=\"twitter:creator\" content=\"@HappyTechDigest\" \/>\n<meta name=\"twitter:site\" content=\"@HappyTechDigest\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"WithHappy\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"3\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/2026\\\/10\\\/02\\\/windows-11-26h2-update\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/2026\\\/10\\\/02\\\/windows-11-26h2-update\\\/\"},\"author\":{\"name\":\"WithHappy\",\"@id\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/#\\\/schema\\\/person\\\/bd5f0f8b26d37eb02da979908ee4d501\"},\"headline\":\"Windows 11 26H2\u66f4\u65b0\",\"datePublished\":\"2026-10-01T17:05:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/2026\\\/10\\\/02\\\/windows-11-26h2-update\\\/\"},\"wordCount\":55,\"publisher\":{\"@id\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/2026\\\/10\\\/02\\\/windows-11-26h2-update\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/happytech.jp\\\/wordpress\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/7c917d28bcf131990bb953a0f9bacaf0.png\",\"keywords\":[\"Office 365\",\"Office 2024\",\"Windows 11 25H2\",\"Windows 11 26H2\",\"Office 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