try to use console button

app/UI/Vms/Pages/VmsDataTable.php

@@ -86,8 +86,9 @@ class VmsDataTable extends DataTable implements ClientArea, AdminArea
             //console
             $this->addActionButton(new ConsoleButton());
             $serviceUrl = new UrlServiceHelper();
-//            $consoleUrl = "http://www.symbionet.de";
-            $this->actionButtons['consoleButton']->setConsoleUrl($serviceUrl->getNoVncConsoleUrl());
+            
+            $consoleUrl = "http://www.symbionet.de";
+            $this->actionButtons['consoleButton']->setConsoleUrl($consoleUrl);
         }
         if(!$isAdmin){
             //edit