diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4564d41198dc776bb601a617743a09e84262b2ad..495916582b86ce3ba29fd33466869ed1a19aeddc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -69,6 +69,9 @@
                   Downgraded [Drush] in require-dev in composer.json from
                   ~9 to 8.4.15 only for development and automated functional
                   testing.
+* Issue [#2921383](https://www.drupal.org/node/2921383):
+                  Changed Varbase after install Tour Welcome Modal message
+                  with window onload.
 * Issue [#2921031](https://www.drupal.org/node/2921031):
                   Varbase 8.4.11: Updated [CHANGELOG.md, UPDATE.md] files and
                   filtered the code for Drupal 8 Coding Standard
diff --git a/modules/varbase_features/varbase_tour/templates/welcome-modal.html.twig b/modules/varbase_features/varbase_tour/templates/welcome-modal.html.twig
index e762b1fc107b340d645bbf1b1bd4f2ceda9538f6..2162157c27306bd94731af28c625d64df360dc99 100644
--- a/modules/varbase_features/varbase_tour/templates/welcome-modal.html.twig
+++ b/modules/varbase_features/varbase_tour/templates/welcome-modal.html.twig
@@ -167,19 +167,22 @@
   </div>
 </div>
 <script type="text/javascript">
-  (function ($, _, Drupal, drupalSettings) {
-    "use strict";
-    Drupal.behaviors.varbaseTourWelcomeModal = {
-      attach: function (context) {
-        $('#welcome-modal').modal({
-          backdrop: 'static',
-          keyboard: false
-        });
+  window.onload = function () {
+    (function ($, _, Drupal, drupalSettings) {
+        "use strict";
 
-        $('#welcome-modal').on('hidden.bs.modal', function (e) {
-          window.location.href= "?tour=1&welcome=done";
-        });
-      }
-    };
-  })(window.jQuery, window._, window.Drupal, window.drupalSettings);
+        Drupal.behaviors.varbaseTourWelcomeModal = {
+          attach: function (context) {
+            $('#welcome-modal').modal({
+              backdrop: 'static',
+              keyboard: false
+            });
+
+            $('#welcome-modal').on('hidden.bs.modal', function (e) {
+              window.location.href= "?tour=1&welcome=done";
+            });
+          }
+        };
+    })(window.jQuery, window._, window.Drupal, window.drupalSettings);
+  }
 </script>