{"id":131290,"date":"2025-10-17T09:28:11","date_gmt":"2025-10-17T00:28:11","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=131290"},"modified":"2025-10-19T08:36:15","modified_gmt":"2025-10-18T23:36:15","slug":"windows-11-localhost-issue","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/windows-11-localhost-issue\/","title":{"rendered":"Windows 11\u306e\u6700\u65b0\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u300clocalhost\u300d\u304c\u6c88\u9ed9\u3002\u56de\u907f\u7b56\u306f\u30a2\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3060\u3051\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2025\/05\/win11_issues.jpg\" alt=\"\" width=\"1280\" height=\"853\" class=\"aligncenter size-full wp-image-128949\" \/><\/p>\n<p class=\"is-style-icon_info\">\u203b2025\/10\/19(\u65e5)\u66f4\u65b0: Microsoft\u306f\u4e0d\u5177\u5408\u304c\u3042\u3063\u305f\u90e8\u5206\u3060\u3051\u3092\u5143\u306b\u623b\u3059\u300cKnown Issue Rollback(KIR)\u300d\u3067<a href=\"https:\/\/softantenna.com\/blog\/windows-11-localhost-kir\/\">\u3053\u306e\u554f\u984c\u306b\u5bfe\u51e6<\/a>\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>2025\u5e7410\u6708\u306eWindows 11 25H2\/24H2\u306e\u7d2f\u7a4d\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u300c<a href=\"https:\/\/softantenna.com\/blog\/windows-11-version-24h2-25h2-kb5066835-monthly\/\">KB5066835<\/a>\u300d\u3092\u9069\u7528\u3057\u305f\u74b0\u5883\u3067\u3001\u958b\u767a\u8005\u304c\u81ea\u5206\u306ePC\u4e0a\u3067\u52d5\u4f5c\u3059\u308bWeb\u30a2\u30d7\u30ea\u306blocalhost\u7d4c\u7531\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308b\u3068\u3044\u3046\u6df1\u523b\u306a\u4e0d\u5177\u5408\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f(<a href=\"https:\/\/www.theregister.com\/2025\/10\/16\/windows_11_update_localhost\/\">The Register<\/a>)\u3002<\/p>\n<p>\u3053\u306e\u554f\u984c\u306f<a href=\"https:\/\/learn.microsoft.com\/en-us\/answers\/questions\/5585563\/localhost-not-working-anymore-after-2025-10-cumula\">Microsoft\u30b5\u30dd\u30fc\u30c8\u30d5\u30a9\u30fc\u30e9\u30e0<\/a>\u3084\u3001<a href=\"https:\/\/learn.microsoft.com\/en-us\/answers\/questions\/5585563\/localhost-not-working-anymore-after-2025-10-cumula\">Stack Overflow<\/a>\u3001<a href=\"https:\/\/superuser.com\/questions\/1926768\/http-2-protocol-error-connecting-to-localhost-web-sites\">Server Fault<\/a>\u306a\u3069\u3067\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002ASP.NET\u3084Visual Studio\u306e\u30c7\u30d0\u30c3\u30b0\u74b0\u5883\u306b\u5f71\u97ff\u3057\u3066\u304a\u308a\u3001HTTP\/2\u30d7\u30ed\u30c8\u30b3\u30eb\u30a8\u30e9\u30fc(<code>ERR_HTTP2_PROTOCOL_ERROR<\/code>)\u3084\u63a5\u7d9a\u5931\u6557(<code>ERR_CONNECTION_RESET<\/code>)\u304c\u767a\u751f\u3059\u308b\u3068\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u539f\u56e0\u306f\u3001Windows\u306eHTTP.sys(\u30ed\u30fc\u30ab\u30ebHTTP\u901a\u4fe1\u3092\u51e6\u7406\u3059\u308b\u30ab\u30fc\u30cd\u30eb\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8)\u306b\u8d77\u56e0\u3057\u3066\u3044\u308b\u3068\u307f\u3089\u308c\u3066\u3044\u3066\u3001KB5066835\u3001\u307e\u305f\u306f\u30d7\u30ec\u30d3\u30e5\u30fc\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8KB5065789\u3092\u30a2\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3067\u5fa9\u65e7\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30ec\u30b8\u30b9\u30c8\u30ea\u3067HTTP\/2\u3092\u7121\u52b9\u5316\u3059\u308b\u3053\u3068\u3067\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u3068\u3044\u3046\u958b\u767a\u8005\u3082\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/learn.microsoft.com\/en-us\/answers\/questions\/5585563\/localhost-not-working-anymore-after-2025-10-cumula\">\u30ec\u30b8\u30b9\u30c8\u30ea\u3092\u7121\u52b9\u5316\u3059\u308b\u624b\u9806<\/a>\u306f\u6b21\u306e\u901a\u308a\u3067\u3059:<\/p>\n<ul>\n<li>\n<p><span>\u30ec\u30b8\u30b9\u30c8\u30ea\u30a8\u30c7\u30a3\u30bf\u30fc\u3092\u958b\u304d\u3001\u4ee5\u4e0b\u306e\u5834\u6240\u306b\u79fb\u52d5: <code>HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\HTTP\\Parameters<\/code><\/span><\/p>\n<\/li>\n<li>\n<p><span><code>Parameters<\/code>\u30d5\u30a9\u30eb\u30c0\u30fc\u3092\u9078\u629e\u3057\u305f\u72b6\u614b\u3067\u3001\u53f3\u5074\u306e\u30da\u30a4\u30f3\u3067\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3001\u300c\u65b0\u898f\u4f5c\u6210> DWORD(32\u30d3\u30c3\u30c8)\u5024\u300d\u3092\u9078\u629e\u3002<\/span><\/p>\n<\/li>\n<li>\n<p><span>\u65b0\u3057\u304f\u4f5c\u6210\u3057\u305f\u5024\u306e\u540d\u524d\u3092<code>EnableHttp2Tls<\/code>\u306b\u5909\u66f4\u3057\u3001\u5024\u306e\u30c7\u30fc\u30bf\u3092<code>0<\/code>\u306b\u8a2d\u5b9a\u3002<\/span><\/p>\n<\/li>\n<li>\n<p><span>\u540c\u69d8\u306b\u3082\u3046\u4e00\u3064\u5024\u3092\u4f5c\u6210\u3057\u3001\u540d\u524d\u3092<code>EnableHttp2Cleartext<\/code>\u306b\u5909\u66f4\u3057\u3066\u3001\u5024\u306e\u30c7\u30fc\u30bf\u3092<code>0<\/code>\u306b\u8a2d\u5b9a\u3002<\/span><\/p>\n<\/li>\n<li>\n<p><span>\u4f5c\u696d\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001PC\u3092\u518d\u8d77\u52d5\u3059\u308b\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n<h2>Microsoft\u306e\u5bfe\u5fdc\u306f\uff1f<\/h2>\n<p>\u73fe\u6642\u70b9\u3067Microsoft\u306f\u3053\u306e\u554f\u984c\u3092\u78ba\u8a8d\u3057\u3066\u304a\u3089\u305a\u3001\u4fee\u6b63\u30d1\u30c3\u30c1\u306f\u672a\u767a\u8868\u3067\u3059\u3002\u30af\u30ea\u30fc\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305fWindows 11 24H2\u3067\u306f\u554f\u984c\u304c\u767a\u751f\u3057\u306a\u3044\u3068\u3044\u3046\u5831\u544a\u3082\u3042\u308a\u3001\u65e2\u5b58\u74b0\u5883\u3068\u306e\u7af6\u5408\u304c\u539f\u56e0\u306e\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u3053\u306e\u4e0d\u5177\u5408\u306f\u3001<a href=\"https:\/\/softantenna.com\/blog\/windows-10-version-22h2-21h2-kb5066791-monthly\/\">Windows 10\u306e\u6700\u7d42\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/a>\u3084Office 2019\u306a\u3069\u306e\u30b5\u30dd\u30fc\u30c8\u7d42\u4e86\u3068\u540c\u9031\u306b\u767a\u751f\u3057\u3001\u6df7\u4e71\u306e\u9023\u9396\u3092\u62db\u3044\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/softantenna.com\/blog\/windows-10-mct-error\/\">Windows 11\u306e\u30e1\u30c7\u30a3\u30a2\u4f5c\u6210\u30c4\u30fc\u30eb\u3082\u540c\u6642\u671f\u306b\u52d5\u4f5c\u4e0d\u826f<\/a>\u3092\u8d77\u3053\u3057\u3066\u304a\u308a\u3001Microsoft\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u6226\u7565\u306b\u7591\u554f\u306e\u58f0\u304c\u4e0a\u304c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u203b2025\/10\/19(\u65e5)\u66f4\u65b0: Microsoft\u306f\u4e0d\u5177\u5408\u304c\u3042\u3063\u305f\u90e8\u5206\u3060\u3051\u3092\u5143\u306b\u623b\u3059\u300cKnown Issue Rollback(KIR)\u300d\u3067\u3053\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3057\u3066\u3044\u307e\u3059\u3002 2025\u5e7410\u6708\u306eWindows 11 25H2 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":128949,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[3298,4387],"class_list":["post-131290","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-windows","tag-windows11"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/131290","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=131290"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/131290\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/128949"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=131290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=131290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=131290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}