diff --git a/src/view/page/menu/PhabricatorMainMenuView.php b/src/view/page/menu/PhabricatorMainMenuView.php
index 383c536a0..df6c460a2 100644
--- a/src/view/page/menu/PhabricatorMainMenuView.php
+++ b/src/view/page/menu/PhabricatorMainMenuView.php
@@ -1,468 +1,479 @@
 <?php
 
 final class PhabricatorMainMenuView extends AphrontView {
 
   private $controller;
   private $applicationMenu;
 
   public function setApplicationMenu(PHUIListView $application_menu) {
     $this->applicationMenu = $application_menu;
     return $this;
   }
 
   public function getApplicationMenu() {
     return $this->applicationMenu;
   }
 
   public function setController(PhabricatorController $controller) {
     $this->controller = $controller;
     return $this;
   }
 
   public function getController() {
     return $this->controller;
   }
 
   public function render() {
     $user = $this->user;
 
     require_celerity_resource('phabricator-main-menu-view');
     require_celerity_resource('sprite-main-header-css');
 
     $header_id = celerity_generate_unique_node_id();
     $menus = array();
     $alerts = array();
     $search_button = '';
     $app_button = '';
     $aural = null;
 
     if ($user->isLoggedIn() && $user->isUserActivated()) {
       list($menu, $dropdowns, $aural) = $this->renderNotificationMenu();
-      $alerts[] = $menu;
+      if (array_filter($menu)) {
+        $alerts[] = $menu;
+      }
       $menus = array_merge($menus, $dropdowns);
       $app_button = $this->renderApplicationMenuButton($header_id);
       $search_button = $this->renderSearchMenuButton($header_id);
     } else {
       $app_button = $this->renderApplicationMenuButton($header_id);
       if (PhabricatorEnv::getEnvConfig('policy.allow-public')) {
         $search_button = $this->renderSearchMenuButton($header_id);
       }
     }
 
     $search_menu = $this->renderPhabricatorSearchMenu();
 
     if ($alerts) {
       $alerts = javelin_tag(
         'div',
         array(
           'class' => 'phabricator-main-menu-alerts',
           'aural' => false,
         ),
         $alerts);
     }
 
     if ($aural) {
       $aural = javelin_tag(
         'span',
         array(
           'aural' => true,
         ),
         phutil_implode_html(' ', $aural));
     }
 
     $application_menu = $this->renderApplicationMenu();
     $classes = array();
     $classes[] = 'phabricator-main-menu';
     $classes[] = 'sprite-main-header';
     $classes[] = 'main-header-'.PhabricatorEnv::getEnvConfig('ui.header-color');
 
     return phutil_tag(
       'div',
       array(
         'class' => implode(' ', $classes),
         'id'    => $header_id,
       ),
       array(
         $app_button,
         $search_button,
         $this->renderPhabricatorLogo(),
         $alerts,
         $aural,
         $application_menu,
         $search_menu,
         $menus,
       ));
   }
 
   private function renderSearch() {
     $user = $this->user;
 
     $result = null;
 
     $keyboard_config = array(
       'helpURI' => '/help/keyboardshortcut/',
     );
 
     if ($user->isLoggedIn()) {
       $show_search = $user->isUserActivated();
     } else {
       $show_search = PhabricatorEnv::getEnvConfig('policy.allow-public');
     }
 
     if ($show_search) {
       $search = new PhabricatorMainMenuSearchView();
       $search->setUser($user);
       $result = $search;
 
       $pref_shortcut = PhabricatorUserPreferences::PREFERENCE_SEARCH_SHORTCUT;
       if ($user->loadPreferences()->getPreference($pref_shortcut, true)) {
         $keyboard_config['searchID'] = $search->getID();
       }
     }
 
     Javelin::initBehavior('phabricator-keyboard-shortcuts', $keyboard_config);
 
     if ($result) {
       $result = id(new PHUIListItemView())
         ->addClass('phabricator-main-menu-search')
         ->appendChild($result);
     }
 
     return $result;
   }
 
   public function renderApplicationMenuButton($header_id) {
     $button_id = celerity_generate_unique_node_id();
     return javelin_tag(
       'a',
       array(
         'class' => 'phabricator-main-menu-expand-button '.
                    'phabricator-expand-search-menu',
         'sigil' => 'jx-toggle-class',
         'meta'  => array(
           'map' => array(
             $header_id => 'phabricator-application-menu-expanded',
             $button_id => 'menu-icon-app-blue',
           ),
         ),
       ),
       phutil_tag(
         'span',
         array(
           'class' => 'phabricator-menu-button-icon sprite-menu menu-icon-app',
           'id' => $button_id,
         ),
         ''));
   }
 
   public function renderApplicationMenu() {
     $user = $this->getUser();
     $controller = $this->getController();
 
     $applications = PhabricatorApplication::getAllInstalledApplications();
 
     $actions = array();
     foreach ($applications as $application) {
       $app_actions = $application->buildMainMenuItems($user, $controller);
       foreach ($app_actions as $action) {
         $actions[] = $action;
       }
     }
 
     $actions = msort($actions, 'getOrder');
 
     $view = $this->getApplicationMenu();
 
     if (!$view) {
       $view = new PHUIListView();
     }
 
     $view->addClass('phabricator-dark-menu');
     $view->addClass('phabricator-application-menu');
 
     if ($actions) {
       $view->addMenuItem(
         id(new PHUIListItemView())
           ->setType(PHUIListItemView::TYPE_LABEL)
           ->setName(pht('Actions')));
       foreach ($actions as $action) {
         $icon = $action->getIcon();
         if ($icon) {
           if ($action->getSelected()) {
             $action->appendChild($this->renderMenuIcon($icon.'-blue-large'));
           } else {
             $action->appendChild($this->renderMenuIcon($icon.'-light-large'));
           }
         }
         $view->addMenuItem($action);
       }
     }
 
     return $view;
   }
 
   public function renderSearchMenuButton($header_id) {
     $button_id = celerity_generate_unique_node_id();
     return javelin_tag(
       'a',
       array(
         'class' => 'phabricator-main-menu-search-button '.
                    'phabricator-expand-application-menu',
         'sigil' => 'jx-toggle-class',
         'meta'  => array(
           'map' => array(
             $header_id => 'phabricator-search-menu-expanded',
             $button_id => 'menu-icon-search-blue',
           ),
         ),
       ),
       phutil_tag(
       'span',
       array(
         'class' => 'phabricator-menu-button-icon sprite-menu menu-icon-search',
         'id' => $button_id,
       ),
       ''));
   }
 
   private function renderPhabricatorSearchMenu() {
 
     $view = new PHUIListView();
     $view->addClass('phabricator-dark-menu');
     $view->addClass('phabricator-search-menu');
 
     $search = $this->renderSearch();
     if ($search) {
       $view->addMenuItem($search);
     }
 
     return $view;
   }
 
   private function renderPhabricatorLogo() {
     $class = 'phabricator-main-menu-logo-image';
 
     return phutil_tag(
       'a',
       array(
         'class' => 'phabricator-main-menu-logo',
         'href'  => '/',
       ),
       array(
         javelin_tag(
           'span',
           array(
             'aural' => true,
           ),
           pht('Home')),
         phutil_tag(
           'span',
           array(
             'class' => 'sprite-menu menu-logo-image '.$class,
           ),
           ''),
       ));
   }
 
   private function renderNotificationMenu() {
     $user = $this->user;
 
     require_celerity_resource('phabricator-notification-css');
     require_celerity_resource('phabricator-notification-menu-css');
     require_celerity_resource('sprite-menu-css');
 
     $container_classes = array(
       'sprite-menu',
       'alert-notifications',
     );
 
     $aural = array();
 
     $message_tag = '';
     $message_notification_dropdown = '';
     $conpherence = 'PhabricatorApplicationConpherence';
-    if (PhabricatorApplication::isClassInstalled($conpherence)) {
+    if (PhabricatorApplication::isClassInstalledForViewer(
+      $conpherence,
+      $user)) {
       $message_id = celerity_generate_unique_node_id();
       $message_count_id = celerity_generate_unique_node_id();
       $message_dropdown_id = celerity_generate_unique_node_id();
 
       $unread_status = ConpherenceParticipationStatus::BEHIND;
       $unread = id(new ConpherenceParticipantCountQuery())
         ->withParticipantPHIDs(array($user->getPHID()))
         ->withParticipationStatus($unread_status)
         ->execute();
       $message_count_number = idx($unread, $user->getPHID(), 0);
 
       if ($message_count_number) {
         $aural[] = phutil_tag(
           'a',
           array(
             'href' => '/conpherence/',
           ),
           pht(
             '%s unread messages.',
             new PhutilNumber($message_count_number)));
       } else {
         $aural[] = pht('No messages.');
       }
 
       if ($message_count_number > 999) {
         $message_count_number = "\xE2\x88\x9E";
       }
 
       $message_count_tag = phutil_tag(
         'span',
         array(
           'id'    => $message_count_id,
           'class' => 'phabricator-main-menu-message-count'
         ),
         $message_count_number);
 
       $message_icon_tag = phutil_tag(
         'span',
         array(
           'class' => 'sprite-menu phabricator-main-menu-message-icon',
         ),
         '');
 
       if ($message_count_number) {
         $container_classes[] = 'message-unread';
       }
 
       $message_tag = phutil_tag(
         'a',
         array(
           'href'  => '/conpherence/',
           'class' => implode(' ', $container_classes),
           'id'    => $message_id,
         ),
         array(
           $message_icon_tag,
           $message_count_tag,
         ));
 
       Javelin::initBehavior(
         'aphlict-dropdown',
         array(
           'bubbleID'    => $message_id,
           'countID'     => $message_count_id,
           'dropdownID'  => $message_dropdown_id,
           'loadingText' => pht('Loading...'),
           'uri'         => '/conpherence/panel/',
         ));
 
       $message_notification_dropdown = javelin_tag(
         'div',
         array(
           'id'    => $message_dropdown_id,
           'class' => 'phabricator-notification-menu',
           'sigil' => 'phabricator-notification-menu',
           'style' => 'display: none;',
         ),
         '');
     }
 
-    $count_id = celerity_generate_unique_node_id();
-    $dropdown_id = celerity_generate_unique_node_id();
-    $bubble_id = celerity_generate_unique_node_id();
+    $bubble_tag = '';
+    $notification_dropdown = '';
+    $notification_app = 'PhabricatorApplicationNotifications';
+    if (PhabricatorApplication::isClassInstalledForViewer(
+      $notification_app,
+      $user)) {
+      $count_id = celerity_generate_unique_node_id();
+      $dropdown_id = celerity_generate_unique_node_id();
+      $bubble_id = celerity_generate_unique_node_id();
 
-    $count_number = id(new PhabricatorFeedStoryNotification())
-      ->countUnread($user);
+      $count_number = id(new PhabricatorFeedStoryNotification())
+        ->countUnread($user);
 
-    if ($count_number) {
-      $aural[] = phutil_tag(
-        'a',
-        array(
-          'href' => '/notification/',
-        ),
-        pht(
-          '%s unread notifications.',
-          new PhutilNumber($count_number)));
-    } else {
-      $aural[] = pht('No notifications.');
-    }
+      if ($count_number) {
+        $aural[] = phutil_tag(
+          'a',
+          array(
+            'href' => '/notification/',
+          ),
+          pht(
+            '%s unread notifications.',
+            new PhutilNumber($count_number)));
+      } else {
+        $aural[] = pht('No notifications.');
+      }
 
-    if ($count_number > 999) {
-      $count_number = "\xE2\x88\x9E";
-    }
+      if ($count_number > 999) {
+        $count_number = "\xE2\x88\x9E";
+      }
 
-    $count_tag = phutil_tag(
-      'span',
-      array(
-        'id'    => $count_id,
-        'class' => 'phabricator-main-menu-alert-count'
-      ),
-      $count_number);
+      $count_tag = phutil_tag(
+        'span',
+        array(
+          'id'    => $count_id,
+          'class' => 'phabricator-main-menu-alert-count'
+        ),
+        $count_number);
 
-    $icon_tag = phutil_tag(
-      'span',
-      array(
-        'class' => 'sprite-menu phabricator-main-menu-alert-icon',
-      ),
-      '');
+      $icon_tag = phutil_tag(
+        'span',
+        array(
+          'class' => 'sprite-menu phabricator-main-menu-alert-icon',
+        ),
+        '');
 
-    if ($count_number) {
-      $container_classes[] = 'alert-unread';
-    }
+      if ($count_number) {
+        $container_classes[] = 'alert-unread';
+      }
 
-    $bubble_tag = phutil_tag(
-      'a',
-      array(
-        'href'  => '/notification/',
-        'class' => implode(' ', $container_classes),
-        'id'    => $bubble_id,
-      ),
-      array($icon_tag, $count_tag));
+      $bubble_tag = phutil_tag(
+        'a',
+        array(
+          'href'  => '/notification/',
+          'class' => implode(' ', $container_classes),
+          'id'    => $bubble_id,
+        ),
+        array($icon_tag, $count_tag));
 
-    Javelin::initBehavior(
-      'aphlict-dropdown',
-      array(
-        'bubbleID'    => $bubble_id,
-        'countID'     => $count_id,
-        'dropdownID'  => $dropdown_id,
-        'loadingText' => pht('Loading...'),
-        'uri'         => '/notification/panel/',
-      ));
+      Javelin::initBehavior(
+        'aphlict-dropdown',
+        array(
+          'bubbleID'    => $bubble_id,
+          'countID'     => $count_id,
+          'dropdownID'  => $dropdown_id,
+          'loadingText' => pht('Loading...'),
+          'uri'         => '/notification/panel/',
+        ));
 
-    $notification_dropdown = javelin_tag(
-      'div',
-      array(
-        'id'    => $dropdown_id,
-        'class' => 'phabricator-notification-menu',
-        'sigil' => 'phabricator-notification-menu',
-        'style' => 'display: none;',
-      ),
-      '');
+      $notification_dropdown = javelin_tag(
+        'div',
+        array(
+          'id'    => $dropdown_id,
+          'class' => 'phabricator-notification-menu',
+          'sigil' => 'phabricator-notification-menu',
+          'style' => 'display: none;',
+        ),
+        '');
+    }
 
     $dropdowns = array(
       $notification_dropdown,
       $message_notification_dropdown);
 
     $applications = PhabricatorApplication::getAllInstalledApplications();
     foreach ($applications as $application) {
       $dropdowns[] = $application->buildMainMenuExtraNodes(
         $this->getUser(),
         $this->getController());
     }
 
     return array(
       array(
         $bubble_tag,
         $message_tag,
       ),
       $dropdowns,
       $aural,
     );
   }
 
   private function renderMenuIcon($name) {
     return phutil_tag(
       'span',
       array(
         'class' => 'phabricator-core-menu-icon '.
                    'sprite-apps-large apps-'.$name,
       ),
       '');
   }
 
 }