diff --git a/src/ajax.php b/src/ajax.php
index cf403bd..b15bb3c 100644
--- a/src/ajax.php
+++ b/src/ajax.php
@@ -23,12 +23,13 @@ if(isset($_GET['loadLists']))
 {
 	check_token();
 	$t = array();
+	$t['total'] = 0;
 	if (!is_logged()) $sqlWhere = 'WHERE published=1';
 	else {
 		$sqlWhere = '';
 		$t['list'][] = prepareAllTasksList(); // show alltasks lists only for authorized user
+		$t['total'] = 1;
 	}
-	$t['total'] = 1;
 	$q = $db->dq("SELECT * FROM {$db->prefix}lists $sqlWhere ORDER BY ow ASC, id ASC");
 	while($r = $q->fetchAssoc())
 	{
diff --git a/src/content/lang/en.json b/src/content/lang/en.json
index 64aff7e..ea8fa73 100644
--- a/src/content/lang/en.json
+++ b/src/content/lang/en.json
@@ -161,6 +161,8 @@
     "actionNoteCancel": "cancel",
     "error": "Some error occurred (click for details)",
     "denied": "Access denied",
+    "listNotFound": "Not found",
+    "noPublicLists": "No public tasks",
     "invalidpass": "Wrong password",
     "addList": "Create new list",
     "addListDefault": "Todo",
diff --git a/src/content/themes/default/index.php b/src/content/themes/default/index.php
index 32e6b09..4540901 100644
--- a/src/content/themes/default/index.php
+++ b/src/content/themes/default/index.php
@@ -116,6 +116,10 @@ $().ready(function(){
   <span id="tagcloudbtn" class="mtt-menu-button"><?php _e('tagcloud');?> <span class="arrdown2"></span></span>
 </h3>
 
+<div id="tasks_info" style="display:none;">
+  <div class="v"></div>
+</div>
+
 <ol id="tasklist" class="sortable"></ol>
 
 </div>
@@ -258,7 +262,7 @@ $().ready(function(){
 
 <div id="slmenucontainer" class="mtt-menu-container" style="display:none">
 <ul>
-  <li id="slmenu_list:-1" class="list-id--1 mtt-need-list"><div class="menu-icon"></div><a href="#alltasks"><?php _e('alltasks'); ?></a></li>
+  <li id="slmenu_list:-1" class="list-id--1 mtt-need-authorized"><div class="menu-icon"></div><a href="#alltasks"><?php _e('alltasks'); ?></a></li>
   <li class="mtt-menu-delimiter slmenu-lists-begin mtt-need-list"></li>
 </ul>
 </div>
diff --git a/src/content/themes/default/style.css b/src/content/themes/default/style.css
index 6154250..4ff9d7a 100644
--- a/src/content/themes/default/style.css
+++ b/src/content/themes/default/style.css
@@ -66,6 +66,7 @@ a { color:#0000ff; cursor:pointer; text-decoration:underline; }
 #msg.mtt-info .msg-details { border:1px solid #EFC300;}
 
 #lists { font-size:0.95rem; display:flex; align-items:flex-start; justify-content:flex-end; }
+#mtt_body.readonly.no-lists #lists > * { visibility: hidden; }
 .tabs-n-button { flex-grow:1; display:flex; align-items:flex-start; }
 .tab-height-wrapper { box-sizing:border-box; height:2.2rem; display:flex; align-items:center; }
 .mtt-tabs { list-style:none; padding:0; margin:0; display:flex; justify-content:flex-start; flex-wrap:wrap; }
@@ -103,7 +104,9 @@ a { color:#0000ff; cursor:pointer; text-decoration:underline; }
 .mtt-img-button:hover, .mtt-img-button.mtt-menu-button-active { background-color:#efefef; cursor:pointer; }
 .mtt-img-button span { display:block; width:16px; height:16px; }
 
-#mtt_body.no-lists #toolbar > * { visibility:hidden; }
+#mtt_body.no-lists         #toolbar > * { visibility:hidden; }
+#mtt_body.no-list-selected #toolbar > * { visibility:hidden; }
+#mtt_body.readonly.no-lists #toolbar { visibility: hidden; }
 #toolbar  { padding:8px; border-bottom:1px solid #DEDEDE; background:#ededed; }
 #toolbar .mtt-img-button:hover { background-color:#ddd; }
 
@@ -145,7 +148,8 @@ a { color:#0000ff; cursor:pointer; text-decoration:underline; }
 
 /* */
 #page_tasks h3 { display:flex; align-items:baseline; }
-#mtt_body.no-lists #page_tasks h3 > * { visibility:hidden; }
+#mtt_body.no-lists         #page_tasks h3 { visibility:hidden; }
+#mtt_body.no-list-selected #page_tasks h3 { visibility:hidden; }
 .mtt-notes-showhide { font-size:1rem; font-weight:normal; margin-left:5px; margin-right:5px; }
 .mtt-notes-showhide a { text-decoration:none; border-bottom:1px dotted; }
 
@@ -298,6 +302,22 @@ li.task-row.task-completed .task-note-block .task-note { text-decoration:line-th
 .prio-zero { /*background-color:#dedede;*/ }
 .task-prio.prio-zero { display:none; }
 
+#tasks_info {
+  display: flex;
+  justify-content: center;
+  align-content: center;
+  flex-direction: column;
+  min-height: 100px;
+  border: 1px solid #ccc;
+  border-radius: 5px;
+}
+#tasks_info .v {
+  font-size: 1.1rem;
+  font-weight: bold;
+  text-align: center;
+}
+
+
 .form-row { margin-top:0.6rem; }
 .form-row .h { font-weight:bold; color:#333333; }
 .form-row div.h { margin-bottom:3px; }
@@ -446,6 +466,7 @@ li.mtt-item-hidden { display:none; }
 #slmenucontainer li.mtt-list-hidden a { font-style:italic; }
 #cmenulistscontainer li.mtt-list-hidden { font-style:italic; }
 #mtt_body.readonly .mtt-need-list { display:none; }
+#mtt_body.readonly .mtt-need-authorized { display:none; }
 
 #btnRssFeed .menu-icon { background:url(images/rss.svg) no-repeat; }
 #btnRssFeed.mtt-item-disabled .menu-icon { background:url(images/rss-disabled.svg) no-repeat; }
diff --git a/src/includes/class.lang.php b/src/includes/class.lang.php
index 870a4c0..82d74ea 100644
--- a/src/includes/class.lang.php
+++ b/src/includes/class.lang.php
@@ -112,6 +112,8 @@ class Lang
 			'actionNoteCancel',
 			'error',
 			'denied',
+			'listNotFound',
+			'noPublicLists',
 			'invalidpass',
 			'addList',
 			'addListDefault',
diff --git a/src/includes/mytinytodo.js b/src/includes/mytinytodo.js
index b4c580e..001369a 100644
--- a/src/includes/mytinytodo.js
+++ b/src/includes/mytinytodo.js
@@ -675,6 +675,7 @@ var mytinytodo = window.mytinytodo = _mtt = {
 		}
 		$('#page_tasks').hide();
 		$('#tasklist').html('');
+		$('#tasks_info').hide();
 
 		tabLists.clear();
 
@@ -682,7 +683,7 @@ var mytinytodo = window.mytinytodo = _mtt = {
 		{
 			var ti = '';
 			var openListId = 0;
-			if(res && res.total)
+			if(res && res.total && res.list)
 			{
 				// open required or first non-hidden list
 				for(var i=0; i<res.list.length; i++) {
@@ -701,9 +702,6 @@ var mytinytodo = window.mytinytodo = _mtt = {
 				// open all tasks tab
 				if(_mtt.options.openList == -1) openListId = -1;
 
-				// or open first if all list are hidden
-				if(!openListId) openListId = res.list[0].id;
-
 				$.each(res.list, function(i,item) {
 					if ( item.id == -1) {
 						tabLists._alltasks = item;
@@ -720,32 +718,43 @@ var mytinytodo = window.mytinytodo = _mtt = {
 				});
 			}
 
-			if(openListId) {
-				$('#mtt_body').removeClass('no-lists');
-				$('.mtt-need-list').removeClass('mtt-item-disabled');
-			}
-			else {
+			if (openListId == 0) {
 				curList = 0;
-				$('#mtt_body').addClass('no-lists');
-				$('.mtt-need-list').addClass('mtt-item-disabled');
-			}
-
-			if (_mtt.options.openList && openListId != _mtt.options.openList) {
-				//TODO: handle unknown list
 			}
 
 			if (_mtt.options.markdown == true) {
 				$('#mtt_body').addClass('markdown-enabled');
 			}
 
+			if (tabLists.length() > 0) {
+				$('#mtt_body').removeClass('no-lists');
+			}
+			else {
+				$('#mtt_body').addClass('no-lists');
+			}
+
+			if (_mtt.options.openList != 0 && openListId == 0) {
+				// cant open list - not found
+				$('#tasks_info .v').text(_mtt.lang.get('listNotFound'))
+				$('#tasks_info').show();
+			}
+			else if (tabLists.length() == 0) {
+				if (flag.readOnly) $('#tasks_info .v').text(_mtt.lang.get('noPublicLists'));
+				else $('#tasks_info .v').text(_mtt.lang.get('listNotFound'))
+				$('#tasks_info').show();
+			}
+
 			_mtt.options.openList = 0;
+			$('#lists .mtt-tabs-selected').removeClass('mtt-tabs-selected');
+			$('#mtt_body').addClass('no-list-selected');
 			$('#lists ul').html(ti);
 			$('#lists').show();
 			_mtt.doAction('listsLoaded');
-			tabSelect(openListId);
 
+			if (tabLists.length() > 0 && openListId != 0) {
+				tabSelect(openListId);
+			}
 			$('#page_tasks').show();
-
 		});
 	},
 
@@ -1378,11 +1387,18 @@ function tabSelect(elementOrId)
 		id = id.split('_', 2)[1];
 		if (id === 'all') id = -1;
 	}
+
 	if ( !tabLists.exists(id) ) {
-		// TODO: handle unknown list
-		flashError(_mtt.lang.get('denied'));
+		$('#tasks_info .v').text(_mtt.lang.get('listNotFound'))
+		$('#tasks_info').show();
+		$('.mtt-need-list').addClass('mtt-item-disabled');
 		return;
 	}
+	else {
+		$('#tasks_info').hide();
+		$('.mtt-need-list').removeClass('mtt-item-disabled');
+		$('#mtt_body').removeClass('no-list-selected');
+	}
 
 	var prevList = curList;
 	curList = tabLists.get(id);
@@ -1409,7 +1425,7 @@ function tabSelect(elementOrId)
 	var isFirstLoad = flag.firstLoad;
 	updateHistoryState( { list:id }, _mtt.urlForList(curList), newTitle );
 
-	if(curList.hidden) {
+	if (curList.hidden && flag.readOnly != true) {
 		curList.hidden = false;
 		_mtt.db.request('setHideList', {list:curList.id, hide:0});
 	}