{"id":403682,"date":"2025-01-06T09:49:46","date_gmt":"2025-01-06T09:49:46","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/"},"modified":"2025-01-06T09:49:46","modified_gmt":"2025-01-06T09:49:46","slug":"403682","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/","title":{"rendered":"Reply To: MAPDL is unable to connect to the system coupling"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;br&gt;Here is a FAQ similar to your problem:&lt;br&gt;<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/when-i-start-a-system-coupling-analysis-i-get-error-messages-similar-to-the-following-but-maybe-with-a-different-port-number-cfx-error-001100279-has-occurred-in-subroutine-erraction-messag\/\">When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: &mdash; ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755. Please ensure that the host name and the port number are correct. Mechanical: &mdash; *** FATAL *** CP = 1.388 TIME= 13:45:41 MAPDL is unable to connect to the system coupling service on 0.0.0.0 through port 49755. Please check ANSYS execution options -schost and -scport for a System Coupling analysis and ensure that the host name and the port number are correct. I checked that the port is not blocked by my firewall. What could be the reason for the failure? | Ansys Knowledge<\/a>&lt;br&gt;&lt;br&gt;I hope this helps.&lt;br&gt;&lt;br&gt;Regards,&lt;br&gt;Harshvardhan&lt;br&gt;<a href=\"https:\/\/ansyshelp.ansys.com\/account\/secured?returnurl=\/Views\/Secured\/main_page.html\" target=\"blank\" rel=\"external noopener nofollow noreferrer\">Ansys Help<\/a>&lt;br&gt;<a href=\"https:\/\/innovationspace.ansys.com\/forum\/categories\/rules-guidelines\" target=\"blank\" rel=\"noopener\">Ansys Learning Forum (Rules &amp; Guidelines)<\/a>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-403682","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-01-06T09:49:46+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-01-06T09:49:46+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403682\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403682\\\/#listItem\",\"name\":\"Reply To: MAPDL is unable to connect to the system coupling\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403682\\\/#listItem\",\"position\":2,\"name\":\"Reply To: MAPDL is unable to connect to the system coupling\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403682\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403682\\\/\",\"name\":\"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum\",\"description\":\"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \\u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/403682\\\/#breadcrumblist\"},\"datePublished\":\"2025-01-06T09:49:46+00:00\",\"dateModified\":\"2025-01-06T09:49:46+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum","description":"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/#listItem","name":"Reply To: MAPDL is unable to connect to the system coupling"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/#listItem","position":2,"name":"Reply To: MAPDL is unable to connect to the system coupling","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/","name":"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum","description":"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/#breadcrumblist"},"datePublished":"2025-01-06T09:49:46+00:00","dateModified":"2025-01-06T09:49:46+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum","og:description":"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755.","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/","article:published_time":"2025-01-06T09:49:46+00:00","article:modified_time":"2025-01-06T09:49:46+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: MAPDL is unable to connect to the system coupling | Ansys Learning Forum","twitter:description":"Hi,Here is a FAQ similar to your problem:When I start a System Coupling analysis, I get error messages similar to the following (but maybe with a different port number): CFX: \u2014 ERROR #001100279 has occurred in subroutine ErrAction. Message: ANSYS CFX is unable to connect to the system coupling service on 0.0.0.0 through port 49755."},"aioseo_meta_data":{"post_id":"403682","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-17 23:18:01","updated":"2025-10-17 23:18:01","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tReply To: MAPDL is unable to connect to the system coupling\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: MAPDL is unable to connect to the system coupling","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/403682\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/403682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/403682\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=403682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}