diff --git a/api/js/jsapi/egw.js b/api/js/jsapi/egw.js
index 9936e483fc..2648da4af8 100644
--- a/api/js/jsapi/egw.js
+++ b/api/js/jsapi/egw.js
@@ -319,35 +319,40 @@
 			{
 				window.scrollTo(0, 1);
 			}
-			// Open tutorial popup with an introduction video about egroupware
-			if (window.framework === window.top.framework && typeof et2_dialog != 'undefined' &&
-				!egw.preference('egw_tutorial_noautoload', 'common') &&
-				!parseInt(document.getElementById('egw_script_id').getAttribute('data-framework-reload')) &&
-				(!egw.config('egw_tutorial_disable', 'phpgwapi') || egw.config('egw_tutorial_disable', 'phpgwapi') == 'sidebox'))
-			{
-				// we need to wait until common translations are loaded
-				egw.langRequireApp(window, 'common', function()
+			try {
+				// Open tutorial popup with an introduction video about egroupware
+				if (window.framework === window.top.framework && typeof et2_dialog != 'undefined' &&
+					!egw.preference('egw_tutorial_noautoload', 'common') &&
+					!parseInt(document.getElementById('egw_script_id').getAttribute('data-framework-reload')) &&
+					(!egw.config('egw_tutorial_disable', 'phpgwapi') || egw.config('egw_tutorial_disable', 'phpgwapi') == 'sidebox'))
 				{
-					var buttons = [
-						{text:egw.lang("Show now"), id:"show", image: "check", default:"true"},
-						{text:egw.lang("Show next login"), id:"later", image: "right"},
-						{text:egw.lang("No thanks"), id:"never", image: "cancel"}
-					];
-					et2_dialog.show_dialog(function (_button_id)
+					// we need to wait until common translations are loaded
+					egw.langRequireApp(window, 'common', function()
 					{
-						if (_button_id == "show" )
+						var buttons = [
+							{text:egw.lang("Show now"), id:"show", image: "check", default:"true"},
+							{text:egw.lang("Show next login"), id:"later", image: "right"},
+							{text:egw.lang("No thanks"), id:"never", image: "cancel"}
+						];
+						et2_dialog.show_dialog(function (_button_id)
 						{
-							egw.open_link(egw.link('/index.php', 'menuaction=api.EGroupware\\Api\\Framework\\Tutorial.popup&tuid=introduction-'+egw.preference('lang')+'-0-a'),'_blank','960x580');
-						}
-						if(_button_id != "later")
-						{
-							egw.set_preference('common', 'egw_tutorial_noautoload',true);
-						}
-					},
-					egw.lang('We would like to introduce you to EGroupware by showing a short introduction video.'),
-					egw.lang('Introduction'),
-					{}, buttons, et2_dialog.QUESTION_MESSAGE, undefined, egw(window));
-				}, this);
+							if (_button_id == "show" )
+							{
+								egw.open_link(egw.link('/index.php', 'menuaction=api.EGroupware\\Api\\Framework\\Tutorial.popup&tuid=introduction-'+egw.preference('lang')+'-0-a'),'_blank','960x580');
+							}
+							if(_button_id != "later")
+							{
+								egw.set_preference('common', 'egw_tutorial_noautoload',true);
+							}
+						},
+						egw.lang('We would like to introduce you to EGroupware by showing a short introduction video.'),
+						egw.lang('Introduction'),
+						{}, buttons, et2_dialog.QUESTION_MESSAGE, undefined, egw(window));
+					}, this);
+				}
+			}
+			catch(e) {
+				// ignore SecurityError exception if top is different security context / cross-origin
 			}
 		});
 	});