{"id":21323,"date":"2025-09-30T09:56:29","date_gmt":"2025-09-30T09:56:29","guid":{"rendered":"https:\/\/outbyte.com\/blog\/?p=21323"},"modified":"2025-09-30T09:56:30","modified_gmt":"2025-09-30T09:56:30","slug":"how-to-fix-error-21-err_network_changed-ja","status":"publish","type":"post","link":"https:\/\/outbyte.com\/blog\/ja\/how-to-fix-error-21-err_network_changed-ja\/","title":{"rendered":"\u5bfe\u51e6\u65b9\u6cd5\u30a8\u30e9\u30fc:21\u2013ERR_NETWORK_CHANGED"},"content":{"rendered":"\n<p>\u3069\u306e\u3088\u3046\u6094\u3057\u3044\u3067\u611f\u3058\u305f\u6642\u3001\u95b2\u89a7\u3001ERR_NETWORK_CHANGED\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002 \u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3088\u3046\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u63a5\u7d9a\u304c\u4e2d\u65ad\u307e\u305f\u306f\u5909\u66f4\u3055\u308c\u3001\u305d\u306e\u5f8c\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u63a5\u7d9a\u3057\u307e\u3059\u3002 <\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-1024x683.png\" alt=\"21\u2013ERR_NETWORK_CHANGED\" class=\"wp-image-21299\" style=\"width:471px;height:auto\" srcset=\"https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-1024x683.png 1024w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-300x200.png 300w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-768x512.png 768w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-1200x800.png 1200w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u3060\u304c\u7d4c\u9a13\u3057\u3066\u3053\u306e\u554f\u984c\u304c\u3001\u3053\u3061\u3089\u306e&#8217;s&#8217;\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u306b\u3064\u3044\u3066\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8E%9F%E5%9B%A0%E3%81%AE%E3%82%A8%E3%83%A9%E3%83%BC_21%E2%80%93ERR_NETWORK_CHANGED\"><\/span>\u539f\u56e0\u306e\u30a8\u30e9\u30fc:21\u2013ERR_NETWORK_CHANGED<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u306f\u767a\u751f\u6642\u304b\u304a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u63a5\u7d9a\u3059\u308b. \u539f\u56e0\u306b\u3088\u308a\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3068\u3001\u6700\u3082\u983b\u5ea6\u306e\u9ad8\u3044\u3066\u3044\u308b\u3068\u9ad8\u901f\u3067\u88dc\u7d66\u3057\u3066\u304f\u308c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e0d\u5b89\u5b9a\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a2d\u5b9a\u306f<\/strong> \u3001\u591a\u304f\u306e\u6025\u6fc0\u306a\u5909\u5316\u306b\u306f\u3001\u304a\u5ba2\u69d8\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a2d\u5b9a\u304c\u30c8\u30ea\u30ac\u30fc\u306e\u3053\u306e\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u8001\u673d\u5316\u3084\u7834\u640d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d0\u30fc\uff1a<\/strong> \u3053\u306e\u3088\u3046\u306a\u8aa4\u4f5c\u52d5\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>DNS\u554f\u984c<\/strong> \u306f\u3001\u58ca\u308c\u305fDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u5f71\u97ff\u3059\u308b\u3068\u30d6\u30e9\u30a6\u30b6\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n\n\n\n<li><strong>\u7b2c\u4e09\u8005\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7d1b\u4e89<\/strong> \u3067Vpn\u3001\u30a2\u30f3\u30c1\u30a6\u30a4\u30eb\u30b9\u3001\u305d\u306e\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c4\u30fc\u30eb\u3092\u59a8\u5bb3\u3059\u308b\u304a\u305d\u308c\u304c\u3042\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30a6\u30a3\u30eb\u30b9\/\u30de\u30eb\u30a6\u30a7\u30a2:<\/strong> \u30de\u30eb\u30a6\u30a7\u30a2\u3067\u304d\u308b\u3082\u306e\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u304c\u539f\u56e0\u3068\u963b\u5bb3\u8981\u56e0.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%E5%86%8D%E8%B5%B7%E5%8B%95%E3%83%A2%E3%83%87%E3%83%A0\"><\/span>1. \u518d\u8d77\u52d5\u30e2\u30c7\u30e0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u7c21\u5358\u306a\u518d\u8d77\u52d5\u306e\u30e2\u30c7\u30e0\u307e\u3067\u660e\u3089\u304b\u306b\u4e00\u6642\u7684\u306b\u63a5\u7d9a\u3059\u3002 \u30b9\u30a4\u30c3\u30c1\u3092\u5207\u308a\u30e2\u30c7\u30e0\u304a\u3088\u3073\u5f85\u6a5f\u3059\u308b\u3053\u3068\u3092\u898b\u3044\u3060\u3057\u307e\u3057\u305f\u3002 <\/p>\n\n\n\n<p>\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u307e\u3057\u3087\u3046\u30e2\u30c7\u30e0\u3092\u8d77\u52d5\u5341\u5206\u306b\u78ba\u8a8d\u3057\u305f\u5834\u5408\u3001\u30a8\u30e9\u30fc\u304c\u7d99\u7d9a\u3055\u308c\u3066\u3044\u308b\u9650\u308a\u306b\u304a\u3044 \u3053\u306e\u305f\u3081\u3001\u65b0\u9bae\u306a\u63a5\u63a5\u7d9a\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E3%83%AA%E3%82%BB%E3%83%83%E3%83%88TCPIP\"><\/span>2. \u30ea\u30bb\u30c3\u30c8TCP\/IP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u305f\u5834\u5408\u306e\u518d\u8d77\u52d5\u30e2\u30c7\u30e0\u306a\u8a66\u307f\u3092\u30ea\u30bb\u30c3\u30c8TCP\/IP\u30b9\u30bf\u30c3\u30af\u3067\u3059\u3002 \u3053\u306e\u554f\u984c\u89e3\u6c7a\u306b\u591a\u304f\u306e\u554f\u984c\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002 \u3044:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3068\u3057\u3066\u7ba1\u7406\u8005\u304c\u884c\u3044\u307e\u3059\u3002<\/strong> \u305d\u3057\u3066\u3001\u4e00\u3064\u4e00\u3064\u3092\u30b3\u30d4\u30fc\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3001\u30d7\u30ec\u30b9\u3092\u5165\u529b\u5f8c\u3001\u5404: <br> &#8211; <code class=\"inline\">netsh int ip reset<\/code><br> &#8211; <code class=\"inline\">netsh winsock reset<\/code><\/li>\n\n\n\n<li><strong>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3092\u518d\u8d77\u52d5\u3057\u3066\u304f\u3060\u3055 <\/strong>\u3084\u304b\u3069\u3046\u304b\u306e\u554f\u984c\u3092\u53d7\u3051\u59cb\u3081\u307e\u3057\u305f\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5229\u7528\u65b9\u6cd5\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8<\/strong><\/p>\n\n\n\n<p>\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u3088\u308b\u4f5c\u54c1\u306a\u3069\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067\u9069\u5207\u306aWindows\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002 \u3067\u3054\u4f7f\u7528\u3059\u308b\u5834\u5408\u306a\u3069\u306b\u3001\u6709\u52b9\u306b\u6a5f\u80fd\u3067\u7ba1\u7406\u8005\u6a29\u9650\u3067\u306e\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7ba1\u7406\u8005\u6a29\u9650\u304c\u5fc5\u8981\u306a\u7279\u5b9a\u306e\u30bf\u30b9\u30af\u306a\u3069\u306e\u30ea\u30bb\u30c3\u30c8 <strong>TCP\/IP\u30d7\u30ed\u30c8\u30b3\u30eb<\/strong>. \u3044\u305f\u3060\u304f\u306b\u306f\u3057\u3063\u304b\u308a\u9032\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3061\u3089\u306f\u3069\u306e\u3088\u3046\u306b\u30ea\u30bb\u30c3\u30c8TCP\/IP\u3092\u4f7f\u7528\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u691c\u7d22 <strong>\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u304c<\/strong> html\u306e\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u306e\u691c\u7d22\u30d0\u30fc\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u53f3\u30af\u30ea\u30c3\u30af\u3067\u9078\u629e <strong>\u7ba1\u7406\u8005\u3068\u3057\u3066\u5b9f\u884c<\/strong>. <br>\u5165\u529b\u306f\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u4e00\u3064\u4e00\u3064\u3001\u30d7\u30ec\u30b9 <strong>\u3092\u5165\u529b<\/strong> \u5f8c\u3001\u5404:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code class=\"inline\">netsh winsock reset<\/code>\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">netsh int ip reset\u00a0<\/code>\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">ipconfig \/release<\/code>\u00a0\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">ipconfig \/renew<\/code>\u00a0\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">ipconfig \/flushdns<\/code>\u00a0\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30b3\u30de\u30f3\u30c9\u3092\u30ea\u30bb\u30c3\u30c8TCP\/IP\u8a2d\u5b9a\u306f\u3001\u3067\u304d\u308b\u89e3\u6c7a\u306b\u3064\u306a\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u95a2\u9023\u306e\u554f\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%E3%83%95%E3%83%A9%E3%83%83%E3%82%B7%E3%83%A5DNS\"><\/span>3. \u30d5\u30e9\u30c3\u30b7\u30e5DNS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u306f\u3001\u58ca\u308c\u305fDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u539f\u56e0\u3067\u95b2\u89a7\u3059\u3002 \u6e05\u7b97\u3082\u89e3\u6c7a\u3059\u308bERR_NETWORK_CHANGED\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002 \u3053\u306e\u65b9\u6cd5\u30d5\u30e9\u30c3\u30b7\u30e5\u304aDNS:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d7\u30ec <kbd>Windows<\/kbd> + <kbd>R<\/kbd> \u306e <strong>\u8d70\u884c\u30c0\u30a4\u30a2\u30ed\u30b0<\/strong>.<\/li>\n\n\n\n<li>\u30bf\u30a4\u30d7 <code class=\"inline\">\u306e\u30bb\u30f3\u30c8\u30ed\u30a4\u30c9\u5206\u5206\u5b50\u52d5\u529b\u5b66<\/code> \u304a\u3088\u3073\u30d7\u30ec\u30b9 <kbd>\u3092\u5165\u529b<\/kbd>. <br>\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u958b\u304d\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u306e\u5f8c\u306b <kbd>\u8a18\u5165<\/kbd>: <code class=\"inline\">ipconfig \/flushdns<\/code><\/li>\n\n\n\n<li>\u30d6\u30e9\u30a6\u30b6\u3092\u9589\u3058\u3066\u518d\u8d77\u52d5\u3057\u305f\u5f8c\u304a\u898b\u308b\u304b\u3069\u3046\u304b\u306e\u554f\u984c\u3092\u53d7\u3051\u59cb\u3081\u307e\u3057\u305f\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%E6%9B%B4%E6%96%B0%E3%81%AE%E3%83%8D%E3%83%83%E3%83%88%E3%83%AF%E3%83%BC%E3%82%AF%E3%83%89%E3%83%A9%E3%82%A4%E3%83%90%E3%83%BC\"><\/span>4. \u66f4\u65b0\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d0\u30fc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u8001\u673d\u5316\u3084\u7834\u640d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d0\u30fc\u3067\u304d\u308b\u7406\u7531\u306e\u63a5\u7d9a\u306e\u554f\u984c\u3067\u3059\u3002 \u66f4\u65b0:\u30a4\u30e1\u30fc\u30b8<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30aa <strong>\u30c7\u30d0\u30a4\u30b9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc<\/strong> \u3092\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3066 <kbd>\u958b\u59cb <\/kbd>\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30af\u30ea\u30c3\u30af\u3067 <strong>\u62e1\u5927\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c0\u30d7\u30bf<\/strong>.<\/li>\n\n\n\n<li>\u53f3\u30af\u30ea\u30c3\u30af\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c0\u30d7\u30bf\u30fc\u3092\u30af\u30ea\u30c3\u30af\u3057 <strong>\u30c9\u30e9\u30a4\u30d0\u306e\u66f4\u65b0<\/strong>.<\/li>\n\n\n\n<li>\u9078\u629e <strong>\u81ea\u52d5\u7684\u306b\u691c\u7d22\u6700\u65b0\u306e\u30c9\u30e9\u30a4\u30d0\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>\u81ea\u52d5\u691c\u7d22\u304ct\u4f5c\u7528\u3092\u691c\u8a0e\u3057\u3066 <a href=\"https:\/\/outbyte.com\/software\/driver-updater?m=blog_article_du_pplink&amp;utm_source=outbyte&amp;utm_medium=blog&amp;utm_campaign=article_du_pplink&amp;utm_term=%7Bbtn_text%7D&amp;utm_content=%7Bpage_path%7D\">Driver Updater<\/a> \u3092\u81ea\u52d5\u7684\u306b\u66f4\u65b0\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u30c9\u30e9\u30a4\u30d0\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_%E3%82%B9%E3%82%AD%E3%83%A3%E3%83%B3%E3%82%B3%E3%83%B3%E3%83%94%E3%83%A5%E3%83%BC%E3%82%BF%E3%81%AE%E3%82%A6%E3%82%A4%E3%83%AB%E3%82%B9\"><\/span>5. \u30b9\u30ad\u30e3\u30f3\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30a6\u30a4\u30eb\u30b9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u306f\u3001ERR_NETWORK_CHANGED\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n\n\n\n<p>\u30d5\u30eb\u30b9\u30ad\u30e3\u30f3\u30b7\u30b9\u30c6\u30e0\u306e\u305f\u3081\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u4f7f\u7528\u306e\u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u3059\u3002 <a href=\"https:\/\/outbyte.com\/software\/avarmor\/?m=blog_article_av_pplink&amp;utm_source=outbyte&amp;utm_medium=blog&amp;utm_campaign=article_av_pplink&amp;utm_term=%7Bbtn_text%7D&amp;utm_content=%7Bpage_path%7D\">Outbyte AVarmor<\/a> \u304a\u3059\u3059\u3081\u306e\u5305\u62ec\u7684\u306a\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_%E3%82%A2%E3%83%B3%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%ABVPN%E3%82%AF%E3%83%A9%E3%82%A4%E3%82%A2%E3%83%B3%E3%83%88%E3%82%BD%E3%83%95%E3%83%88%E3%82%A6%E3%82%A7%E3%82%A2\"><\/span>6. \u30a2\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30ebVPN\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6642\u306b\u306f\u3001Vpn\u3079\u3066\u306e\u7a7a\u6e2f\u3092\u8868\u793a\u4e00\u90e8\u306e\u7a7a\u6e2f\u3092\u8868\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u304a\u3088\u3073\u7d50\u679c\u306a\u3069\u3002 \u307f\u30a2\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304aVPN\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5834\u5408\u3001\u30a8\u30e9\u30fc\u304c\u89e3\u9664. \u305d\u306e\u5834\u5408\u3001\u3069\u3061\u3089\u8003\u3048\u308b\u518d\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306eVPN\u306b\u306f\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>\u306b\u306f\u3069\u306e\u3088\u3046\u306a\u610f\u5473\u304c\u3042\u308aERR_NETWORK_CHANGED?<\/strong><\/summary>\n<p>\u306e\u30b3\u30fc\u30c9\u3067\u5909\u5316\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u3044\u305f\u5834\u6240\u307e\u305f\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u305f\u4e71\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>\u6708\u306e\u89b3\u70b9\u304b\u3089\u306f\u554f\u984c\u306b\u30c9\u30e9\u30a4\u30d0\u30fc\u304c\u3053\u306e\u7a2e\u306e\u30a8\u30e9\u30fc?<\/strong><\/summary>\n<p>\u3042\u308a\u3001\u3053\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u3092\u8d77\u70b9\u3067\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d0\u30fc\u3082\u304b\u307e\u305f\u306f\u7834\u640d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>\u3069\u3093\u306a\u30de\u30d5\u30e9\u30c3\u30b7\u30e5DNS?<\/strong><\/summary>\n<p>\u3059\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u958b\u304d\u3001\u5165ipconfig\/flushdns\u3053\u3068\u3092\u304aDNS\u30ad\u30e3\u30c3\u30b7\u30e5.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>\u3067\u304d\u308b\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\u3042\u306a\u305f\u306e\u30de\u30eb\u30a6\u30a7\u30a2?<\/strong><\/summary>\n<p>\u3042\u308a\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u3067\u518d\u69cb\u6210\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a2d\u5b9a\u3068\u5207\u308a\u96e2\u3059\u3060\u304b\u3089\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3002<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>\u306f\u3044\u30a2\u30f3\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30deVPN\u3092\u4fee\u6b63\u3002<\/strong><\/summary>\n<p>\u7121\u52b9\u306bVPN\u4eee\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u554f\u984c\u304c\u3042\u308b\u3002 \u3059\u518d\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u306f\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u307e\u305f\u306f\u3064\u306e\u307f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>\u3069\u306e\u3088\u3046\u6094\u3057\u3044\u3067\u611f\u3058\u305f\u6642\u3001\u95b2\u89a7\u3001ERR_NETWORK_CHANGED\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002 \u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3088\u3046\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u63a5\u7d9a\u304c\u4e2d\u65ad\u307e\u305f\u306f\u5909\u66f4\u3055\u308c\u3001\u305d\u306e\u5f8c\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u63a5\u7d9a\u3057\u307e\u3059\u3002 \u3060\u304c\u7d4c\u9a13\u3057\u3066\u3053\u306e\u554f\u984c\u304c\u3001\u3053\u3061\u3089\u306e&#8217;s&#8217;\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u306b\u3064\u3044\u3066\u89e3\u6c7a\u3057\u307e\u3059\u3002 \u539f\u56e0\u306e\u30a8\u30e9\u30fc:21\u2013ERR_NETWORK_CHANGED \u3053\u306e\u30a8\u30e9\u30fc\u306f\u767a\u751f\u6642\u304b\u304a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u63a5\u7d9a\u3059\u308b. \u539f\u56e0\u306b\u3088\u308a\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3068\u3001\u6700\u3082\u983b\u5ea6\u306e\u9ad8\u3044\u3066\u3044\u308b\u3068\u9ad8\u901f\u3067\u88dc\u7d66\u3057\u3066\u304f\u308c 1. \u518d\u8d77\u52d5\u30e2\u30c7\u30e0 \u7c21\u5358\u306a\u518d\u8d77\u52d5\u306e\u30e2\u30c7\u30e0\u307e\u3067\u660e\u3089\u304b\u306b\u4e00\u6642\u7684\u306b\u63a5\u7d9a\u3059\u3002 \u30b9\u30a4\u30c3\u30c1\u3092\u5207\u308a\u30e2\u30c7\u30e0\u304a\u3088\u3073\u5f85\u6a5f\u3059\u308b\u3053\u3068\u3092\u898b\u3044\u3060\u3057\u307e\u3057\u305f\u3002 \u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u307e\u3057\u3087\u3046\u30e2\u30c7\u30e0\u3092\u8d77\u52d5\u5341\u5206\u306b\u78ba\u8a8d\u3057\u305f\u5834\u5408\u3001\u30a8\u30e9\u30fc\u304c\u7d99\u7d9a\u3055\u308c\u3066\u3044\u308b\u9650\u308a\u306b\u304a\u3044 \u3053\u306e\u305f\u3081\u3001\u65b0\u9bae\u306a\u63a5\u63a5\u7d9a\u3059\u3002 2. \u30ea\u30bb\u30c3\u30c8TCP\/IP \u305f\u5834\u5408\u306e\u518d\u8d77\u52d5\u30e2\u30c7\u30e0\u306a\u8a66\u307f\u3092\u30ea\u30bb\u30c3\u30c8TCP\/IP\u30b9\u30bf\u30c3\u30af\u3067\u3059\u3002 \u3053\u306e\u554f\u984c\u89e3\u6c7a\u306b\u591a\u304f\u306e\u554f\u984c\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002 \u3044: \u5229\u7528\u65b9\u6cd5\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8 \u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u306b\u3088\u308b\u4f5c\u54c1\u306a\u3069\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067\u9069\u5207\u306aWindows\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002 \u3067\u3054\u4f7f\u7528\u3059\u308b\u5834\u5408\u306a\u3069\u306b\u3001\u6709\u52b9\u306b\u6a5f\u80fd\u3067\u7ba1\u7406\u8005\u6a29\u9650\u3067\u306e\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3044\u307e\u3059\u3002 \u7ba1\u7406\u8005\u6a29\u9650\u304c\u5fc5\u8981\u306a\u7279\u5b9a\u306e\u30bf\u30b9\u30af\u306a\u3069\u306e\u30ea\u30bb\u30c3\u30c8 TCP\/IP\u30d7\u30ed\u30c8\u30b3\u30eb. \u3044\u305f\u3060\u304f\u306b\u306f\u3057\u3063\u304b\u308a\u9032\u3081\u3066\u3044\u307e\u3059\u3002 \u3053\u3061\u3089\u306f\u3069\u306e\u3088\u3046\u306b\u30ea\u30bb\u30c3\u30c8TCP\/IP\u3092\u4f7f\u7528\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8: \u3053\u308c\u3089\u306e\u30b3\u30de\u30f3\u30c9\u3092\u30ea\u30bb\u30c3\u30c8TCP\/IP\u8a2d\u5b9a\u306f\u3001\u3067\u304d\u308b\u89e3\u6c7a\u306b\u3064\u306a\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u95a2\u9023\u306e\u554f\u984c\u3067\u3059\u3002 3. \u30d5\u30e9\u30c3\u30b7\u30e5DNS \u306f\u3001\u58ca\u308c\u305fDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u539f\u56e0\u3067\u95b2\u89a7\u3059\u3002 \u6e05\u7b97\u3082\u89e3\u6c7a\u3059\u308bERR_NETWORK_CHANGED\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002 \u3053\u306e\u65b9\u6cd5\u30d5\u30e9\u30c3\u30b7\u30e5\u304aDNS: 4. \u66f4\u65b0\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d0\u30fc \u8001\u673d\u5316\u3084\u7834\u640d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d0\u30fc\u3067\u304d\u308b\u7406\u7531\u306e\u63a5\u7d9a\u306e\u554f\u984c\u3067\u3059\u3002 \u66f4\u65b0:\u30a4\u30e1\u30fc\u30b8 \u81ea\u52d5\u691c\u7d22\u304ct\u4f5c\u7528\u3092\u691c\u8a0e\u3057\u3066 Driver Updater \u3092\u81ea\u52d5\u7684\u306b\u66f4\u65b0\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u30c9\u30e9\u30a4\u30d0\u307e\u3059\u3002 5. \u30b9\u30ad\u30e3\u30f3\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30a6\u30a4\u30eb\u30b9 \u30de\u30eb\u30a6\u30a7\u30a2\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u306f\u3001ERR_NETWORK_CHANGED\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002 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