{"id":41549,"date":"2023-01-28T00:58:12","date_gmt":"2023-01-27T15:58:12","guid":{"rendered":"https:\/\/kinqsta.com\/jp\/?p=41549&#038;post_type=knowledgebase&#038;preview_id=41549"},"modified":"2025-10-02T04:47:19","modified_gmt":"2025-10-01T19:47:19","slug":"err_tunnel_connection_failed","status":"publish","type":"post","link":"https:\/\/kinqsta.com\/jp\/blog\/err_tunnel_connection_failed\/","title":{"rendered":"Chrome\u306e\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5"},"content":{"rendered":"<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u305d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u4e2d\u9593\u30b5\u30fc\u30d0\u30fc\u306e\u554f\u984c\u306b\u3088\u3063\u3066\u3001\u6642\u6298\u3053\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u51e6\u7406\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u969b\u306b\u906d\u9047\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u306e\u304c\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001<a href=\"https:\/\/kinqsta.com\/jp\/browser-market-share\/\">Google Chrome<\/a>\u306e\u307f\u3067\u898b\u3089\u308c\u308b\u3082\u306e\u3067\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u3057\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u8a2d\u5b9a\u3092\u8a73\u3057\u304f\u8abf\u3079\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u624b\u9806\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002\u307e\u305f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u306b\u95a2\u9023\u3059\u308b\u305d\u306e\u4ed6\u306e\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306e\u6982\u8981\u3068\u539f\u56e0\u3001\u305d\u3057\u3066\u89e3\u6c7a\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<p><strong><a href=\"https:\/\/www.youtube.com\/watch?v=vEnoCUR74DE\">\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306b\u3064\u3044\u3066\u52d5\u753b\u3067\u306e\u89e3\u8aac\u3082\u3054\u7528\u610f\u3057\u3066\u3044\u307e\u3059<\/a><\/strong>\u3002<\/p>\n<kinsta-video src=\"https:\/\/www.youtube.com\/watch?v=vEnoCUR74DE\"><\/kinsta-video>\n<h2>\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u3068\u306f<\/h2>\n<p>\u300cTUNNEL\u300d\u3068\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u306b\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u63a5\u7d9a\u306e\u4e00\u7a2e\u3092\u610f\u5473\u3057\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306f\u3001\u901a\u5e38\u3001\u30d7\u30ed\u30ad\u30b7\u307e\u305f\u306f<a href=\"https:\/\/kinqsta.com\/jp\/blog\/what-is-dns\/\">\u30c9\u30e1\u30a4\u30f3\u30cd\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0\uff08DNS\uff09<\/a>\u306e\u3044\u305a\u308c\u304b\u306b\u554f\u984c\u304c\u3042\u308b\u3068\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1380px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/tunnel-connection-failed.png\" alt=\"\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\" width=\"1380\" height=\"605\"><figcaption class=\"wp-caption-text\">\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc<\/figcaption><\/figure>\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u81ea\u4f53\u306b\u554f\u984c\u304c\u3042\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u305f\u3081\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/what-is-a-url\/\">\u4ed6\u306eURL\u306b\u30a2\u30af\u30bb\u30b9<\/a>\u3057\u305f\u308a\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u30a2\u30d7\u30ea\u3092\u4f7f\u7528\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u308b\u3053\u3068\u3082\u3002\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001\u4f7f\u7528\u3057\u3066\u3044\u308bDNS\u307e\u305f\u306f\u30d7\u30ed\u30ad\u30b7\u304c\u3001\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u540d\u3092IP\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\uff08\u540d\u524d\u89e3\u6c7a\uff09\u3067\u304d\u3066\u3044\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001Chrome\u4ee5\u5916\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3082\u3001\u30b5\u30a4\u30c8\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u3068\u3044\u3046\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001Chrome\u7279\u6709\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u8868\u793a\u3055\u308c\u308b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u6839\u672c\u7684\u306a\u554f\u984c\u3068\u306f\u95a2\u4fc2\u306e\u306a\u3044\u7a00\u306a\u30d1\u30bf\u30fc\u30f3\u3067\u3001Chrome\u306b\u3088\u308c\u3070\u3001\u30b5\u30a4\u30c8\u306e\u30c0\u30a6\u30f3\u3084\u5225\u306e\u30a2\u30c9\u30ec\u30b9\u3078\u306e\u79fb\u52d5\u3092\u793a\u5506\u3057\u3066\u3044\u308b\u3053\u3068\u3082\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u3042\u304f\u307e\u3067\u8868\u9762\u7684\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3042\u308a\u3001\u305d\u306e\u80cc\u5f8c\u306b\u3042\u308b\u554f\u984c\u306f\u53cd\u6620\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n<h2>\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\uff084\u3064\u306e\u65b9\u6cd5\uff09<\/h2>\n<p>\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u306f\u3001\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3084DNS\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001Chrome\u306e\u5834\u5408\u306f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\uff08OS\uff09\u3092\u901a\u3058\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u3001Windows\u3068macOS\u3067\u3001\u30d7\u30ed\u30ad\u30b7\u3068DNS\u306e\u6f5c\u5728\u7684\u306a\u554f\u984c\u3092\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u65b9\u6cd5\u3092\u305d\u308c\u305e\u308c\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u306a\u304a\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u59cb\u3081\u308b\u524d\u306b\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/how-to-clear-browser-cache\/\">\u30d6\u30e9\u30a6\u30b6\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u30af\u30ea\u30a2<\/a>\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>1. \u30d7\u30ed\u30ad\u30b7\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\uff08\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u7121\u52b9\u5316\uff09<\/h3>\n<p>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u306e\u554f\u984c\u306f\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306e\u4e3b\u306a\u539f\u56e0\u306e1\u3064\u3002\u3053\u308c\u306f\u3001OS\u304c\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\u3092\u81ea\u52d5\u7684\u306b\u691c\u51fa\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u7279\u5b9a\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Windows\u3067\u306f\u3001\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u958b\u304d\u3001\u300c<strong>inetpl.cpl<\/strong>\u300d\u3068\u5165\u529b\u3057\u307e\u3059\u3002\u3059\u308b\u3068\u3001\u300c<strong>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong>\u300d\u306e\u8a2d\u5b9a\u30a6\u30a3\u30f3\u30c9\u30a6\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u300c<strong>\u63a5\u7d9a<\/strong>\u300d\uff1e\u300c<strong>LAN\u306e\u8a2d\u5b9a<\/strong>\u300d\u306b\u79fb\u52d5\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<figure style=\"width: 1196px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/lan-settings.png\" alt=\"Windows\u306e\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\" width=\"1196\" height=\"578\"><figcaption class=\"wp-caption-text\">Windows\u306e\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a<\/figcaption><\/figure>\n<p>\u6b21\u306e\u753b\u9762\u3067\u3001\u7279\u5b9a\u306e<a href=\"https:\/\/kinqsta.com\/blog\/proxy-vs-vpn\/\">\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/a>\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u300c<strong>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/strong>\u300d\u306b\u30b5\u30fc\u30d0\u30fc\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\u3092\u81ea\u52d5\u7684\u306b\u691c\u51fa\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7121\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4e00\u6642\u7684\u306b\u6709\u52b9\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure style=\"width: 1189px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/proxy-settings.png\" alt=\"\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\u306e\u81ea\u52d5\u691c\u51fa\u3092\u9078\u629e\" width=\"1189\" height=\"577\"><figcaption class=\"wp-caption-text\">\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\u306e\u81ea\u52d5\u691c\u51fa\u3092\u9078\u629e<\/figcaption><\/figure>\n<p>\u81ea\u52d5\u8a2d\u5b9a\u3092\u6709\u52b9\u306b\u3057\u305f\u3089\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u304c\u6d88\u3048\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u307e\u3060\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u30d7\u30ed\u30ad\u30b7\u306e\u81ea\u52d5\u8a2d\u5b9a\u3068\u624b\u52d5\u8a2d\u5b9a\u306e\u4e21\u65b9\u3092\u7121\u52b9\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u3067\u3001\u30d7\u30ed\u30ad\u30b7\u3092\u4f7f\u7528\u3057\u306a\u3044\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>macOS\u306e\u5834\u5408\u306f\u3001\u30a2\u30c3\u30d7\u30eb\u30e1\u30cb\u30e5\u30fc\u3067\u300c<strong>\u30b7\u30b9\u30c6\u30e0\u74b0\u5883\u8a2d\u5b9a<\/strong>\u300d\uff1e\u300c<strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/strong>\u300d\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002\u53f3\u5074\u306e\u30e1\u30cb\u30e5\u30fc\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u629e\u3057\u3001\u300c<strong>\u8a73\u7d30<\/strong>\u300d\uff1e\u300c<strong>\u30d7\u30ed\u30ad\u30b7<\/strong>\u300d\u30bf\u30d6\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u753b\u9762\u3067\u3001\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\u306e\u624b\u52d5\u3068\u81ea\u52d5\u306e\u3069\u3061\u3089\u304b\u3092\u9078\u629e\u3057\u3001\u3044\u305a\u308c\u304b\u306e\u8a2d\u5b9a\u3092\u7121\u52b9\u306b\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1420px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/mac-proxy-settings.jpg\" alt=\"macOS\u306e\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a\" width=\"1420\" height=\"1450\"><figcaption class=\"wp-caption-text\">macOS\u306e\u30d7\u30ed\u30ad\u30b7\u8a2d\u5b9a<\/figcaption><\/figure>\n<p>\u30d7\u30ed\u30ad\u30b7\u3092\u7121\u52b9\u306b\u3057\u305f\u3089\u3001\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u307e\u3060\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u89e3\u6c7a\u7b56\u306b\u79fb\u308a\u307e\u3059\u3002<\/p>\n<h3>2. \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u8a2d\u5b9a\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b<\/h3>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u8a2d\u5b9a\u3092\u300c\u30ea\u30bb\u30c3\u30c8\u300d\u3059\u308b\u3068\u3044\u3046\u306e\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e<a href=\"https:\/\/kinqsta.com\/jp\/tools\/what-is-my-ip\/\">IP\u30a2\u30c9\u30ec\u30b9<\/a>\u3092\u66f4\u65b0\u3057\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/flush-dns\/\">\u30ed\u30fc\u30ab\u30eb\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2<\/a>\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<a href=\"https:\/\/kinqsta.com\/blog\/what-is-cached-data\/\">\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u306f\u3053\u3061\u3089<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Windows\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u8a2d\u5b9a\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u306b\u306f\u3001\u7ba1\u7406\u8005\u30e2\u30fc\u30c9\u3067\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u958b\u304d\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u30921\u3064\u305a\u3064\u8cbc\u308a\u4ed8\u3051\u3001\u305d\u308c\u305e\u308cEnter\u30ad\u30fc\u3067\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre><code>IPCONFIG \/FLUSHDNS\n\nNBTSTAT \u2013R\n\nNETSH INT IP RESET\n\nNETSH WINSOCK RESET<\/code><\/pre>\n<p>\u6700\u5f8c\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u305f\u3089\u3001Chrome\u3092\u518d\u8d77\u52d5\u3057\u3066\u3001\u30a8\u30e9\u30fc\u304c\u6d88\u3048\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u89e3\u6c7a\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/what-is-dns\/\">DNS<\/a>\u306e\u8a2d\u5b9a\u306b\u554f\u984c\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002macOS\u306e\u5834\u5408\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u6a5f\u80fd\u304c\u306a\u3044\u305f\u3081\u3001Wi-Fi\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u6709\u7dda\u63a5\u7d9a\u3092\u524a\u9664\u3057\u3066\u518d\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u3001\u540c\u3058\u3053\u3068\u3092\u518d\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>3. DNS\u30b5\u30fc\u30d0\u30fc\u3092\u5909\u66f4\u3059\u308b<\/h3>\n<p>\u304a\u4f7f\u3044\u306eOS\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\uff08ISP\uff09\u304c\u63d0\u4f9b\u3059\u308bDNS\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5225\u306eDNS\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002DNS\u8a2d\u5b9a\u3082\u307e\u305f\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306e\u4e3b\u306a\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002Windows\u3067\u3053\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u300c<strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u72b6\u614b<\/strong>\u300d\u3092\u958b\u304d\u3001\u300c<strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a73\u7d30\u8a2d\u5b9a<\/strong>\u300d\uff1e\u300c<strong>\u30a2\u30c0\u30d7\u30bf\u30fc\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u5909\u66f4\u3059\u308b<\/strong>\u300d\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1274px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/change-adapter-options.png\" alt=\"\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\" width=\"1274\" height=\"772\"><figcaption class=\"wp-caption-text\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u306e\u8a2d\u5b9a\u3092\u5909\u66f4<\/figcaption><\/figure>\n<p>\u6b21\u306e\u753b\u9762\u3067\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u3092\u898b\u3064\u3051\u3066\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3001\u300c<strong>\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong>\u300d\u3092\u9078\u629e\u3002\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u753b\u9762\u3067\u300c<strong>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u30d0\u30fc\u30b8\u30e7\u30f34\uff08TCP\/IPv4\uff09<\/strong>\u300d\u3092\u9078\u629e\u3057\u3066\u3001\u53f3\u4e0b\u306e\u300c<strong>\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1077px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/internet-properties.png\" alt=\"Windows\u306eDNS\u8a2d\u5b9a\" width=\"1077\" height=\"565\"><figcaption class=\"wp-caption-text\">Windows\u306eDNS\u8a2d\u5b9a<\/figcaption><\/figure>\n<p>\u6b21\u306b\u8868\u793a\u3055\u308c\u308b\u30a6\u30a3\u30f3\u30c9\u30a6\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u7528\u306eIP\u3068DNS\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3068DNS\u30b5\u30fc\u30d0\u30fc\u306e\u4e21\u65b9\u3092\u81ea\u52d5\u7684\u306b\u53d6\u5f97\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001ISP\u306eDNS\u3067\u306f\u306a\u304f\u3001Google Public DNS\u3092\u8a2d\u5b9a\u3057\u305f\u4f8b\u3067\u3059\u3002<\/p>\n<figure style=\"width: 1131px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/dns-settings.png\" alt=\"DNS\u30b5\u30fc\u30d0\u30fc\u3092\u81ea\u52d5\u691c\u51fa\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\" width=\"1131\" height=\"627\"><figcaption class=\"wp-caption-text\">DNS\u30b5\u30fc\u30d0\u30fc\u3092\u81ea\u52d5\u691c\u51fa\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a<\/figcaption><\/figure>\n<p>DNS\u30b5\u30fc\u30d0\u30fc\u3092\u81ea\u52d5\u7684\u306b\u53d6\u5f97\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001<a href=\"https:\/\/www.techradar.com\/news\/best-dns-server\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d1\u30d6\u30ea\u30c3\u30afDNS\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528<\/a>\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002Cisco OpenDNS\u3001<a href=\"https:\/\/kinqsta.com\/jp\/cloudflare-integration\/\">Cloudflare<\/a>\u3001Google Public DNS\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u9078\u629e\u80a2\u304c\u3042\u308a\u3001\u30d1\u30d6\u30ea\u30c3\u30afDNS\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001<a href=\"https:\/\/kinqsta.com\/jp\/learn\/page-speed\/\">\u30da\u30fc\u30b8\u306e\u8868\u793a\u901f\u5ea6\u304c\u6539\u5584<\/a>\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30d1\u30d6\u30ea\u30c3\u30afDNS\u3092\u5229\u7528\u3059\u308b\u969b\u306f\u3001\u512a\u5148DNS\u306b\u52a0\u3048\u3066\u3001\u4ee3\u66ffDNS\u3082\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u3059\u3067\u306b\u30ab\u30b9\u30bf\u30e0DNS\u3092\u304a\u4f7f\u3044\u306e\u5834\u5408\u306f\u3001DNS\u30b5\u30fc\u30d0\u30fc\u3092\u81ea\u52d5\u7684\u306b\u53d6\u5f97\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u8a2d\u5b9a\u3092\u884c\u3063\u305f\u3089\u3001\u30d6\u30e9\u30a6\u30b6\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u3001\u30a8\u30e9\u30fc\u304c\u6d88\u3048\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u308c\u3067\u89e3\u6c7a\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u30ab\u30b9\u30bf\u30e0DNS\u306b\u4e00\u6642\u7684\u306a\u554f\u984c\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>4. Chrome\u306e\u8a2d\u5b9a\u3092\u521d\u671f\u5316\u3059\u308b<\/h3>\n<p>Chrome\u306b\u306f\u3001\u518d\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u305b\u305a\u306b\u30d6\u30e9\u30a6\u30b6\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u8a2d\u5b9a\u306b\u521d\u671f\u5316\u3059\u308b\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u304c\u3001\u30d7\u30ed\u30ad\u30b7\u3084DNS\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u3066\u3082\u30a8\u30e9\u30fc\u304c\u89e3\u6c7a\u3057\u306a\u3044\u5834\u5408\u306e\u6700\u5f8c\u306e\u89e3\u6c7a\u7b56\u3002<\/p>\n<p>Chrome\u306e\u8a2d\u5b9a\u753b\u9762\u306b\u79fb\u52d5\u3057\u3001\u300c<strong>\u30ea\u30bb\u30c3\u30c8\u3068\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7<\/strong>\u300d\uff1e\u300c<strong>\u8a2d\u5b9a\u3092\u5143\u306e\u65e2\u5b9a\u5024\u306b\u623b\u3059<\/strong>\u300d\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u64cd\u4f5c\u306b\u3088\u3063\u3066\u3001\u62e1\u5f35\u6a5f\u80fd\u304c\u7121\u52b9\u306b\u306a\u308a\u3001\u4e00\u6642\u30c7\u30fc\u30bf\uff08\u30d6\u30c3\u30af\u30de\u30fc\u30af\u3092\u9664\u304f\uff09\u304c\u524a\u9664\u3055\u308c\u307e\u3059\u3002\u78ba\u8a8d\u753b\u9762\u306e\u5185\u5bb9\u306b\u540c\u610f\u306e\u4e0a\u3001\u300c<strong>\u8a2d\u5b9a\u306e\u30ea\u30bb\u30c3\u30c8<\/strong>\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure style=\"width: 1264px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/wp-content\/uploads\/2023\/01\/reset-settings-original-chrome.png\" alt=\"Chrome\u306e\u8a2d\u5b9a\u3092\u30ea\u30bb\u30c3\u30c8\" width=\"1264\" height=\"870\"><figcaption class=\"wp-caption-text\">Chrome\u306e\u8a2d\u5b9a\u3092\u30ea\u30bb\u30c3\u30c8<\/figcaption><\/figure>\n<p>\u305d\u308c\u304b\u3089\u3057\u3070\u3089\u304f\u5f85\u3061\u3001Chrome\u304c\u518d\u8d77\u52d5\u3057\u305f\u3089\u3001\u30a8\u30e9\u30fc\u304c\u6d88\u3048\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<p>\u307e\u3060\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u3001Mozilla\u306a\u3069\u4ed6\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3082\u540c\u69d8\u306b\u63a5\u7d9a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u5834\u5408\u3001\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u306a\u304f\u3001\u30d7\u30ed\u30ad\u30b7\u3084DNS\u306e\u8a2d\u5b9a\u306b\u554f\u984c\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002\u5148\u307b\u3069\u306e\u624b\u9806\u306b\u623b\u3063\u3066\u3001\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u518d\u5ea6\u78ba\u304b\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>Chrome\u4ee5\u5916\u3067\u306e\u30a8\u30e9\u30fc\u306e\u767a\u751f\u5834\u6240<\/h2>\n<p>\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u306f\u3001Google Chrome\u7279\u6709\u306e\u30a8\u30e9\u30fc\u3002\u3057\u304b\u3057\u3001\u4ed6\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3082\u30d7\u30ed\u30ad\u30b7\u3084DNS\u30b5\u30fc\u30d0\u30fc\u95a2\u9023\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u300c<a href=\"https:\/\/kinqsta.com\/blog\/dns-server-not-responding\/\">DNS\u30b5\u30fc\u30d0\u30fc\u306f\u5fdc\u7b54\u3057\u3066\u3044\u307e\u305b\u3093<\/a>\u300d\u30a8\u30e9\u30fc\u306f\u3001Chrome\u3001Safari\u3001Firefox\u3001Edge\u306a\u3069\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u898b\u3089\u308c\u307e\u3059\u3002\u307e\u305f\u300c<a href=\"https:\/\/kinqsta.com\/jp\/blog\/http-error-407\/\">407 Proxy Authentication Required<\/a>\u300d\u30a8\u30e9\u30fc\u306f\u3001\u30d7\u30ed\u30ad\u30b7\u306b\u95a2\u9023\u3059\u308b\u3082\u306e\u3067\u3001\u4f7f\u7528\u3057\u3066\u3044\u308b\u30d7\u30ed\u30ad\u30b7\u8a8d\u8a3c\u304c\u6a5f\u80fd\u3057\u3066\u3044\u306a\u3044\u3001\u307e\u305f\u306f\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u306b\u906d\u9047\u3057\u305f\u3089\u3001\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305f\u65b9\u6cd5\u3067\u89e3\u6c7a\u53ef\u80fd\u3067\u3059\u3002\u5927\u4f53\u306e\u5834\u5408\u306f\u3001DNS\u3084\u30d7\u30ed\u30ad\u30b7\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3059\u308b\u304b\u3001<a href=\"https:\/\/kinqsta.com\/blog\/how-does-a-vpn-work\/\">\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08VPN\uff09\u3092\u4f7f\u7528<\/a>\u3059\u308b\u3053\u3068\u3067\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3055\u308c\u307e\u3059\u3002<\/p>\n\n<h2>\u307e\u3068\u3081<\/h2>\n<p>Chrome\u3067\u898b\u3089\u308c\u308b\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306f\u3001\u30b5\u30a4\u30c8\u306e\u30c0\u30a6\u30f3\u3084\u79fb\u884c\u3068\u95a2\u4fc2\u304c\u3042\u308b\u53ef\u80fd\u6027\u3092\u793a\u5506\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u6df7\u4e71\u3092\u307e\u306d\u304f\u3053\u3068\u3082\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u30a8\u30e9\u30fc\u306f\u30d7\u30ed\u30ad\u30b7\u307e\u305f\u306fDNS\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u304c\u539f\u56e0\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n<p>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u306f\u3001\u3059\u3079\u3066\u306eOS\u306b\u5171\u901a\u3057\u307e\u3059\u3002<a href=\"https:\/\/kinqsta.com\/blog\/google-cache\/\">Google\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2<\/a>\u3057\u305f\u3089\u3001\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305f\u89e3\u6c7a\u7b56\u3092\u5b9f\u8df5\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Kinsta\u3092\u3054\u5229\u7528\u3067\u3001\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306b\u906d\u9047\u3057\u305f\u5834\u5408\u306f\u3001\u3044\u3064\u3067\u3082\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8\u306b\u3054\u9023\u7d61\u304f\u3060\u3055\u3044\u3002<a href=\"https:\/\/kinqsta.com\/jp\/pricing\/\">Kinsta\u306e\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d0\u30fc\u30d7\u30e9\u30f3<\/a>\u3067\u306f\u3001\u3042\u3089\u3086\u308b\u554f\u984c\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3001\u696d\u754c\u30c8\u30c3\u30d7\u30af\u30e9\u30b9\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u3054\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u305d\u306e\u30b3\u30f3\u30c6\u30f3 &#8230;<\/p>\n","protected":false},"author":199,"featured_media":41550,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"topic":[754],"class_list":["post-41549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","topic-chrome-errors"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chrome\u306e\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5\uff5cKinsta\u00ae<\/title>\n<meta name=\"description\" content=\"\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306f\u3001\u901a\u5e38\u3001\u30d7\u30ed\u30ad\u30b7\u307e\u305f\u306fDNS\uff08\u30c9\u30e1\u30a4\u30f3\u30cd\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0\uff09\u306e\u8a2d\u5b9a\u304c\u539f\u56e0\u3067\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u3053\u306e\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u30924\u7a2e\u985e\u3054\u7d39\u4ecb\u3057\u307e\u3059\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:\/\/kinqsta.com\/jp\/blog\/err_tunnel_connection_failed\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chrome\u306e\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"\u300cERR_TUNNEL_CONNECTION_FAILED\u300d\u30a8\u30e9\u30fc\u306f\u3001\u901a\u5e38\u3001\u30d7\u30ed\u30ad\u30b7\u307e\u305f\u306fDNS\uff08\u30c9\u30e1\u30a4\u30f3\u30cd\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0\uff09\u306e\u8a2d\u5b9a\u304c\u539f\u56e0\u3067\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u3053\u306e\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u30924\u7a2e\u985e\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kinqsta.com\/jp\/blog\/err_tunnel_connection_failed\/\" \/>\n<meta property=\"og:site_name\" content=\"Kinsta\u00ae\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Kinsta-Japan-334616080691171\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-01-27T15:58:12+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-01T19:47:19+00:00\" \/>\n<meta property=\"og:image\" 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