{"id":3616,"date":"2026-02-17T16:30:30","date_gmt":"2026-02-17T07:30:30","guid":{"rendered":"https:\/\/support.millenvpn.jp\/?p=3616"},"modified":"2026-04-30T12:25:20","modified_gmt":"2026-04-30T03:25:20","slug":"millenvpn-native-openconnect%e3%81%ab%e6%8e%a5%e7%b6%9a%e3%81%a7%e3%81%8d%e3%81%aa%e3%81%84%e5%a0%b4%e5%90%88%e3%81%ae%e5%af%be%e5%87%a6%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/support.millenvpn.jp\/en\/3616","title":{"rendered":"What to do if you cannot connect to MillenVPN Native OpenConnect"},"content":{"rendered":"<p>Please try this procedure if your VPN connection does not work properly with MillenVPN Native OpenConnect.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(1) When one of the following errors occurs<\/h2>\n\n\n\n<p>If you are experiencing any of the following errors, please check the link.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/support.millenvpn.jp\/en\/991\/\">Secure Client (Connection attempt denied by the secure gateway. A new connection attempt to the same or another Secure Gateway requiring re-authentication is required.)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/support.millenvpn.jp\/en\/3354\/\">OpenConnect-GUI connection screen does not appear, application does not open<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">(2) When the above does not apply and connection is not possible<\/h2>\n\n\n\n<p>There have been many cases of connection failures due to incorrect user name\/password or server address entered during setup.<br>Please refer to the following to confirm that the correct information has been entered.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"OC\u30e6\u30fc\u30b6\u30fc\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u63a5\u7d9a\u5148\u30b5\u30fc\u30d0\u30fc\u30a2\u30c9\u30ec\u30b9\u306e\u78ba\u8a8d\u65b9\u6cd5\">How to check user name, password, and server address to connect to<\/h3>\n\n\n\n<p>1.<a href=\"https:\/\/accounts.millenvpn.jp\/clientarea.php\">My Page<\/a>Log in.<\/p>\n\n\n\n<p>2. Click on Services.<br><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"135\" class=\"wp-image-3620\" style=\"width: 500px;\" src=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror1.png\" alt=\"\" srcset=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror1.png 1395w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror1-300x81.png 300w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror1-1024x277.png 1024w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror1-768x208.png 768w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror1-18x5.png 18w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n\n\n\n<p>3. Click on MillenVPN Native (free option).<br><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"110\" class=\"wp-image-3619\" style=\"width: 500px;\" src=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror2.png\" alt=\"\" srcset=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror2.png 1255w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror2-300x66.png 300w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror2-1024x224.png 1024w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror2-768x168.png 768w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror2-18x4.png 18w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n\n\n\n<p>4. The user name, password, and server address to connect to will be displayed in the page opened in step 3.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-vk-color-custom-4-color has-text-color has-link-color wp-elements-6c561347e853eb1ce7f660020b96e64e\"><strong>[Notes.<\/strong><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-link-color wp-elements-e2a2e65a7c65783d7eb5184920566e73\">Manual input is prone to capitalization errors and extra spaces, so please use the following format whenever possible.<strong>Copy and paste input<\/strong>Please do so.<br>We have received many cases where the addresses of \"MillenVPN Native\" and \"MillenVPN Native OpenConnect\" have been entered incorrectly. Please be sure to<strong>Server address of \"MillenVPN Native OpenConnect<\/strong>correctly.<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u25bc User name and password<\/strong><\/h4>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"179\" class=\"wp-image-3618\" style=\"width: 500px;\" src=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror3.png\" alt=\"\" srcset=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror3.png 1210w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror3-300x108.png 300w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror3-1024x367.png 1024w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror3-768x275.png 768w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/nativeerror3-18x6.png 18w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u25bc Connection server address<br><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"363\" class=\"wp-image-3624\" style=\"width: 500px;\" src=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/ocerror1.png\" alt=\"\" srcset=\"https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/ocerror1.png 1213w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/ocerror1-300x218.png 300w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/ocerror1-1024x744.png 1024w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/ocerror1-768x558.png 768w, https:\/\/support.millenvpn.jp\/wp-content\/uploads\/2026\/02\/ocerror1-18x12.png 18w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/h4>\n\n\n\n<h2 class=\"wp-block-heading\">(3) When there is no error in the input information but the connection cannot be established<\/h2>\n\n\n\n<p>Please try the following four points.<\/p>\n\n\n\n<p><strong>1. Change the server to connect to and see if it is possible to connect.<\/strong><br><a href=\"#OC\u30e6\u30fc\u30b6\u30fc\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u63a5\u7d9a\u5148\u30b5\u30fc\u30d0\u30fc\u30a2\u30c9\u30ec\u30b9\u306e\u78ba\u8a8d\u65b9\u6cd5\" type=\"internal\" id=\"#OC\u30e6\u30fc\u30b6\u30fc\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u63a5\u7d9a\u5148\u30b5\u30fc\u30d0\u30fc\u30a2\u30c9\u30ec\u30b9\u306e\u78ba\u8a8d\u65b9\u6cd5\">Here<\/a>Please check the destination server of MillenVPN Native OpenConnect according to the procedure in the following section, change the server address to a different server address from the currently set destination server address, and check if it is possible to connect.<\/p>\n\n\n\n<p><strong>2. Whether it is possible to change the communication line and connect<\/strong><br>Please verify whether you can connect while connected to a different communication line than the one currently in use (e.g., connecting to a different Wi-Fi network, connecting without being connected to Wi-Fi).<\/p>\n\n\n\n<p><strong>3. Stop the security software and see if the connection is possible.<\/strong><br>If you have security software installed, please verify whether you can connect while the security software is disabled.<\/p>\n\n\n\n<p><strong>4. Reboot the device and reinstall the application to see if the connection is possible.<\/strong><\/p>\n\n\n\n<p>Please note that the information you confirmed at the time of application<a href=\"https:\/\/support.millenvpn.jp\/en\/1710\/\"><strong>Important Pre-Contract Information<\/strong><\/a>As we have explained in the following section,<strong>If you wish to use the service from a country with strict communication restrictions, such as China, it may be difficult to connect because the availability of connection depends on the international situation and the connection source.<\/strong>We appreciate your understanding in this matter.<\/p>\n\n\n\n<p>If the above measures do not resolve the issue, we will investigate the cause on our end, so<br>We apologize for the inconvenience, but please include the following information:<a href=\"https:\/\/accounts.millenvpn.jp\/submitticket.php?step=2&amp;deptid=3\">Contact Form<\/a>Please feel free to contact us.<\/p>\n\n\n\n<div class=\"wp-block-group has-vk-color-custom-3-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>1.Environment for use<br>Service attempting to connect: MillenVPN Native OpenConnect<br>OS and version of your device (e.g. iOS 15 \/ Windows 11):<br>The name of the country where the VPN will be used:<br>Usage of VPN:<\/p>\n\n\n\n<p>2. Provide screen shots<br>A screenshot of the screen where the user name, password, and connection server address are entered<br>Screenshot of the screen showing the error message<\/p>\n\n\n\n<p>3. Isolate the situation<br>Are you currently connected to other VPNs (MillenVPN app or other VPNs): (Yes\/No)<br>Do you want to change the server to which you are connected to improve the situation?<br>Do you want to change communication lines to improve (e.g., different Wi-Fi or mobile communication): (Yes\/No)<br>Do you want to stop the security software to improve the situation: (Yes\/No)<br>Does restarting the terminal improve the situation: (Yes\/No)<br>Does reinstalling the app improve the situation: (Yes\/No)<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u3053\u3061\u3089\u306e\u624b\u9806\u306f\u3001MillenVPN Native OpenConnect\u306b\u3066VPN\u63a5\u7d9a\u304c\u6b63\u5e38\u306b\u6a5f\u80fd\u3057\u306a\u3044\u969b\u306b\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002 \u2460\u4ee5\u4e0b\u3044\u305a\u308c\u304b\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408 \u4ee5\u4e0b\u3044\u305a\u308c\u304b\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30ea\u30f3\u30af\u5148\u306e [&hellip;]<\/p>\n","protected":false},"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[21],"tags":[],"device":[],"class_list":["post-3616","post","type-post","status-publish","format-standard","hentry","category-troubleshooting-native-openconnect"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MillenVPN Native OpenConnect\u306b\u63a5\u7d9a\u3067\u304d\u306a\u3044\u5834\u5408\u306e\u5bfe\u51e6\u65b9\u6cd5 | MillenVPN \u30d8\u30eb\u30d7\u30bb\u30f3\u30bf\u30fc<\/title>\n<meta name=\"description\" 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If you are experiencing any of the following errors, please check the contents of the link below. 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