{"id":101305,"date":"2025-12-21T09:16:16","date_gmt":"2025-12-21T03:46:16","guid":{"rendered":"https:\/\/www.seminarsonly.com\/news\/?p=101305"},"modified":"2025-12-21T09:21:35","modified_gmt":"2025-12-21T03:51:35","slug":"ubisoft-error-dolphin-028-proven-fixes","status":"publish","type":"post","link":"https:\/\/seminarsonly.com\/news\/ubisoft-error-dolphin-028-proven-fixes\/","title":{"rendered":"Ubisoft Error Dolphin 028 | Proven Fixes"},"content":{"rendered":"<h3 data-path-to-node=\"0\"><span style=\"color: #008000;\"><em>The <b data-path-to-node=\"0\" data-index-in-node=\"4\">Dolphin-028<\/b> error is a connectivity issue with <b data-path-to-node=\"0\" data-index-in-node=\"51\">Ubisoft Connect<\/b> (the launcher). It means your PC cannot exchange the necessary &#8220;handshake&#8221; data with Ubisoft&#8217;s authentication servers.<\/em><\/span><\/h3>\n<p data-path-to-node=\"1\">This error affects multiple games (including <i data-path-to-node=\"1\" data-index-in-node=\"45\">Rainbow Six Siege<\/i>, <i data-path-to-node=\"1\" data-index-in-node=\"64\">Ghost Recon<\/i>, and <i data-path-to-node=\"1\" data-index-in-node=\"81\">The Division 2<\/i>) because it blocks you from logging in entirely.<\/p>\n<p data-path-to-node=\"2\">Here are the proven fixes, ordered from easiest to most effective.<\/p>\n<h2 data-path-to-node=\"3\"><span style=\"color: #800000;\"><b data-path-to-node=\"3\" data-index-in-node=\"0\">Fix 1: The &#8220;Cache Clear&#8221; (Most Effective)<\/b><\/span><\/h2>\n<p data-path-to-node=\"4\">Corrupted temporary files in the launcher often cause this loop.<\/p>\n<ol start=\"1\" data-path-to-node=\"5\">\n<li>\n<p data-path-to-node=\"5,0,0\"><b data-path-to-node=\"5,0,0\" data-index-in-node=\"0\">Close<\/b> Ubisoft Connect completely (check your taskbar\/system tray to make sure it&#8217;s not running in the background).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"5,1,0\">Navigate to this folder on your PC: <code data-path-to-node=\"5,1,0\" data-index-in-node=\"36\">C:\\Program Files (x86)\\Ubisoft\\Ubisoft Game Launcher\\cache<\/code><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"5,2,0\"><b data-path-to-node=\"5,2,0\" data-index-in-node=\"0\">Delete<\/b> the contents of the <code data-path-to-node=\"5,2,0\" data-index-in-node=\"27\">cache<\/code> folder. (Or rename the folder to <code data-path-to-node=\"5,2,0\" data-index-in-node=\"66\">cache_backup<\/code> if you want to be safe).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"5,3,0\">Restart Ubisoft Connect.<\/p>\n<\/li>\n<\/ol>\n<h3>Also Read : <a href=\"https:\/\/www.seminarsonly.com\/news\/expedition-33-thank-you-update-what-is-in-the-update\/\">Expedition 33 Thank You Update<\/a><\/h3>\n<h2 data-path-to-node=\"6\"><span style=\"color: #800000;\"><b data-path-to-node=\"6\" data-index-in-node=\"0\">Fix 2: Flush Your DNS<\/b><\/span><\/h2>\n<p data-path-to-node=\"7\">If the cache clear didn&#8217;t work, your network settings might be holding onto a bad connection path.<\/p>\n<ol start=\"1\" data-path-to-node=\"8\">\n<li>\n<p data-path-to-node=\"8,0,0\">Press the <b data-path-to-node=\"8,0,0\" data-index-in-node=\"10\">Windows Key<\/b> and type <b data-path-to-node=\"8,0,0\" data-index-in-node=\"31\">cmd<\/b>.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"8,1,0\">Right-click <b data-path-to-node=\"8,1,0\" data-index-in-node=\"12\">Command Prompt<\/b> and select <b data-path-to-node=\"8,1,0\" data-index-in-node=\"38\">Run as Administrator<\/b>.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"8,2,0\">Type the following commands one by one, pressing <b data-path-to-node=\"8,2,0\" data-index-in-node=\"49\">Enter<\/b> after each:<\/p>\n<ul data-path-to-node=\"8,2,1\">\n<li>\n<p data-path-to-node=\"8,2,1,0,0\"><code data-path-to-node=\"8,2,1,0,0\" data-index-in-node=\"0\">ipconfig \/flushdns<\/code><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"8,2,1,1,0\"><code data-path-to-node=\"8,2,1,1,0\" data-index-in-node=\"0\">ipconfig \/release<\/code><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"8,2,1,2,0\"><code data-path-to-node=\"8,2,1,2,0\" data-index-in-node=\"0\">ipconfig \/renew<\/code><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"8,2,1,3,0\"><code data-path-to-node=\"8,2,1,3,0\" data-index-in-node=\"0\">netsh winsock reset<\/code><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-path-to-node=\"8,3,0\">Restart your computer and try again.<\/p>\n<\/li>\n<\/ol>\n<h2 data-path-to-node=\"9\"><span style=\"color: #800000;\"><b data-path-to-node=\"9\" data-index-in-node=\"0\">Fix 3: The &#8220;Hotspot Jump&#8221; Workaround<\/b><\/span><\/h2>\n<p data-path-to-node=\"10\">If your home router is blocking the specific authentication port, this bypasses it.<\/p>\n<ol start=\"1\" data-path-to-node=\"11\">\n<li>\n<p data-path-to-node=\"11,0,0\">Disconnect your PC from your home Wi-Fi\/Ethernet.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,1,0\">Turn on a <b data-path-to-node=\"11,1,0\" data-index-in-node=\"10\">mobile hotspot<\/b> on your phone and connect your PC to it.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,2,0\">Launch Ubisoft Connect and <b data-path-to-node=\"11,2,0\" data-index-in-node=\"27\">log in<\/b>.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"11,3,0\">Once you are successfully logged in and can see your games, <b data-path-to-node=\"11,3,0\" data-index-in-node=\"60\">switch back<\/b> to your normal home Wi-Fi\/Ethernet. The connection usually stays active after the initial login.<\/p>\n<\/li>\n<\/ol>\n<h2 data-path-to-node=\"12\"><span style=\"color: #800000;\"><b data-path-to-node=\"12\" data-index-in-node=\"0\">Fix 4: Check MTU Settings (Advanced)<\/b><\/span><\/h2>\n<p data-path-to-node=\"13\">If you still can&#8217;t connect, your packet size (MTU) might be too high for Ubisoft&#8217;s servers.<\/p>\n<ol start=\"1\" data-path-to-node=\"14\">\n<li>\n<p data-path-to-node=\"14,0,0\">Open Command Prompt as Administrator.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,1,0\">Type: <code data-path-to-node=\"14,1,0\" data-index-in-node=\"6\">netsh interface ipv4 show subinterfaces<\/code><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,2,0\">Note the name of your connection (e.g., &#8220;Ethernet&#8221; or &#8220;Wi-Fi&#8221;).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,3,0\">Type this command to lower the MTU to 1450: <code data-path-to-node=\"14,3,0\" data-index-in-node=\"44\">netsh interface ipv4 set subinterface \"Ethernet\" mtu=1450 store=persistent<\/code> <i data-path-to-node=\"14,3,0\" data-index-in-node=\"119\">(Replace &#8220;Ethernet&#8221; with your actual connection name).<\/i><\/p>\n<\/li>\n<\/ol>\n<p data-path-to-node=\"15\"><b data-path-to-node=\"15\" data-index-in-node=\"0\">Note:<\/b> If none of these work, check <b data-path-to-node=\"15\" data-index-in-node=\"35\">Ubisoft Support<\/b> on X (Twitter). If their authentication servers are down globally, you just have to wait.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Dolphin-028 error is a connectivity issue with Ubisoft Connect (the launcher). It means your PC cannot exchange the necessary &#8220;handshake&#8221; data with Ubisoft&#8217;s authentication servers. This error affects multiple&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6048],"tags":[],"class_list":["post-101305","post","type-post","status-publish","format-standard","hentry","category-error-fix"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ubisoft Error Dolphin 028 | Proven Fixes - Seminarsonly.com<\/title>\n<meta name=\"description\" content=\"The Dolphin-028 error is a connectivity issue with Ubisoft Connect (the launcher). 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