{"id":134754,"date":"2026-06-21T10:26:09","date_gmt":"2026-06-21T01:26:09","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=134754"},"modified":"2026-06-21T10:26:09","modified_gmt":"2026-06-21T01:26:09","slug":"windows11-jscript-compat-issue","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/windows11-jscript-compat-issue\/","title":{"rendered":"Windows 11\u30671\u5e74\u653e\u7f6e\u3055\u308c\u3066\u3044\u305fJScript\u4e92\u63db\u6027\u554f\u984c\u3001\u539f\u56e0\u3068\u30ec\u30b8\u30b9\u30c8\u30ea\u56de\u907f\u7b56"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2025\/04\/Win1125H2.jpg\" alt=\"\" width=\"1024\" height=\"640\" class=\"aligncenter size-full wp-image-128679\" \/><\/p>\n<p>Microsoft\u306f6\u670818\u65e5(\u73fe\u5730\u6642\u9593)\u3001\u30b5\u30dd\u30fc\u30c8\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u300c<a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/jscript-global-definitions-and-execution-context-might-not-persist-across-scripts-77ff3a18-c1dd-49d0-b55b-483884b49028\">JScript global definitions and execution context might not persist across scripts<\/a>\u300d\u3092\u516c\u958b\u3057\u3001Windows 11\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3(24H2\/25H2)\u3067\u767a\u751f\u3057\u3066\u3044\u305fJScript\u306e\u4e92\u63db\u6027\u554f\u984c\u3092\u6b63\u5f0f\u306b\u8a8d\u3081\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u4e0d\u5177\u5408\u306f\u5b9f\u306f\u7d041\u5e74\u524d\u304b\u3089\u5b58\u5728\u3057\u3066\u3044\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u53e4\u3044\u30a2\u30d7\u30ea\u3084 Web \u30d9\u30fc\u30b9\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u3044\u305f\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u539f\u56e0\u306f\u300cJScript9Legacy\u300d\u3078\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5909\u66f4<\/h2>\n<p>\u3053\u306e\u554f\u984c\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u30a8\u30f3\u30b8\u30f3\u306e\u5909\u66f4\u306b\u3088\u308a\u767a\u751f\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>2025\u5e747\u6708\u3001Microsoft\u306fWindows 11\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u5f93\u6765\u306ejscript9.dll\u304b\u3089jscript9legacy.dll\u3078\u3068\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u30a8\u30f3\u30b8\u30f3\u3092\u5207\u308a\u66ff\u3048\u307e\u3057\u305f\u3002\u3053\u306e\u5909\u66f4\u306f\u3001XSS(\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30b9\u30af\u30ea\u30d7\u30c6\u30a3\u30f3\u30b0)\u306a\u3069\u306e\u8106\u5f31\u6027\u3092\u6e1b\u3089\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b\u76ee\u7684\u3067\u884c\u308f\u308c\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u305d\u306e\u526f\u4f5c\u7528\u3068\u3057\u3066\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u9593\u3067\u30b0\u30ed\u30fc\u30d0\u30eb\u5b9a\u7fa9\u3084\u5b9f\u884c\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u304c\u5f15\u304d\u7d99\u304c\u308c\u306a\u3044\u3068\u3044\u3046\u554f\u984c\u304c\u767a\u751f\u3057\u3001\u53e4\u3044\u30a2\u30d7\u30ea\u3084\u30ec\u30ac\u30b7\u30fc\u306aWeb\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u306a\u304f\u306a\u308b\u30b1\u30fc\u30b9\u304c\u51fa\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u5f93\u6765\u306e JScript \u30a8\u30f3\u30b8\u30f3\u3067\u306f\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u9593\u3067\u72b6\u614b\u304c\u4fdd\u6301\u3055\u308c\u308b\u3068\u3044\u3046\u4ed5\u69d8\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u65b0\u3057\u3044\u30a8\u30f3\u30b8\u30f3\u3067\u306f\u3053\u306e\u6319\u52d5\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u7121\u52b9\u5316\u3055\u308c\u3001\u7d50\u679c\u3068\u3057\u3066\u4e00\u90e8\u306e\u30ec\u30ac\u30b7\u30fc\u30a2\u30d7\u30ea\u3084\u30dd\u30ea\u30d5\u30a3\u30eb\u4f9d\u5b58\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u52d5\u4f5c\u3057\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2>Microsoft \u304c\u63d0\u4f9b\u3057\u305f\u89e3\u6c7a\u7b56\uff1a\u30ec\u30b8\u30b9\u30c8\u30ea\u8a2d\u5b9a\u3067\u6301\u7d9a\u6027\u3092\u6709\u52b9\u5316<\/h2>\n<p>Microsoft\u306f\u3053\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u3001<a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/february-24-2026-kb5077241-os-builds-26200-7922-and-26100-7922-preview-b8cc7bc8-d640-4f18-9437-3ee59298b970\">KB5077241<\/a>\u3067\u4fee\u6b63\u3092\u63d0\u4f9b\u3057\u307e\u3057\u305f\u304c\u3001\u5bfe\u5fdc\u7b56\u306f\u81ea\u52d5\u7684\u306b\u306f\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u554f\u984c\u3092\u4fee\u6b63\u3059\u308b\u306b\u306f\u3001\u7ba1\u7406\u8005\u304c\u624b\u52d5\u3067\u30ec\u30b8\u30b9\u30c8\u30ea\u8a2d\u5b9a\u3092\u884c\u3044\u3001JScript \u306e\u5b9f\u884c\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u6301\u7d9a\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<p><strong>1.FEATURE_ENABLE_PERSISTENCE\u30ad\u30fc\u3092\u4f5c\u6210\u3059\u308b<\/strong><\/p>\n<p>\u307e\u305a\u3001\u7ba1\u7406\u8005\u6a29\u9650\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3067\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001\u6a5f\u80fd\u5236\u5fa1\u7528\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u30ad\u30fc\u3092\u4f5c\u6210\u3057\u307e\u3059<\/p>\n<pre>\r\nreg add \"HKLM\\Software\\Policies\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_ENABLE_PERSISTENCE\"\r\n<\/pre>\n<p><strong>2.DWORD\u5024\u3092\u4f5c\u6210\u3059\u308b<\/strong><\/p>\n<p>\u4f5c\u6210\u3057\u305f\u30ad\u30fc\u306e\u4e0b\u306b\u3001\u65b0\u3057\u3044DWORD(32\u30d3\u30c3\u30c8)\u5024\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<p><strong>3. \u5024\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/strong><\/p>\n<p>\u7528\u9014\u306b\u5fdc\u3058\u3066\u3001\u6b21\u306e\u3088\u3046\u306b\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u7279\u5b9a\u306e\u30d7\u30ed\u30bb\u30b9\u3060\u3051\u3067\u6301\u7d9a\u6027\u3092\u6709\u52b9\u306b\u3057\u305f\u3044\u5834\u5408<\/strong>: \u5bfe\u8c61\u3068\u306a\u308b<strong>\u30d7\u30ed\u30bb\u30b9\u540d(\u4f8b: app.exe)<\/strong>\u3092\u5024\u306e\u540d\u524d\u306b\u3057\u3066\u3001\u5024\u3092<strong>1<\/strong>\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u6301\u7d9a\u6027\u3092\u6709\u52b9\u306b\u3057\u305f\u3044\u5834\u5408<\/strong>: \u5024\u306e\u540d\u524d\u3092<strong>*(\u30a2\u30b9\u30bf\u30ea\u30b9\u30af)<\/strong>\u306b\u3057\u3001\u5024\u3092<strong>1<\/strong>\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2026\/06\/jscript_registry.avif\" alt=\"\" width=\"480\" height=\"351\" class=\"aligncenter size-full wp-image-134755\" \/><\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u4eca\u56de\u306e\u554f\u984c\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5411\u4e0a\u306e\u305f\u3081\u306e\u5909\u66f4\u304c\u3001\u7d50\u679c\u3068\u3057\u3066\u30ec\u30ac\u30b7\u30fc\u74b0\u5883\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u3057\u307e\u3063\u305f\u5178\u578b\u4f8b\u3068\u8a00\u3048\u307e\u3059\u3002Microsoft\u304c\u6b63\u5f0f\u306b\u554f\u984c\u3092\u8a8d\u3081\u3001\u5bfe\u51e6\u65b9\u6cd5\u3092\u516c\u958b\u3057\u305f\u3053\u3068\u3067\u3001\u3088\u3046\u3084\u304f\u539f\u56e0\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u30ec\u30ac\u30b7\u30fc\u30a2\u30d7\u30ea\u3092\u6271\u3046\u74b0\u5883\u3067\u306f\u3001\u4eca\u56de\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u8a2d\u5b9a\u304c\u91cd\u8981\u306a\u56de\u907f\u7b56\u3068\u306a\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n<p>[via <a href=\"https:\/\/www.neowin.net\/news\/microsoft-finally-admits-its-default-windows-11-25h2-24h2-action-broke-key-legacy-component\/\">Neowin<\/a>]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft\u306f6\u670818\u65e5(\u73fe\u5730\u6642\u9593)\u3001\u30b5\u30dd\u30fc\u30c8\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u300cJScript global definitions and execution context might not persist across scr [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":128679,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[4884,3298,4387],"class_list":["post-134754","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-jscript","tag-windows","tag-windows11"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/134754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/comments?post=134754"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/134754\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/128679"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=134754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=134754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=134754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}