diff --git a/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php b/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php
--- a/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php
+++ b/src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php
@@ -72,8 +72,10 @@
 
     if (!$panel) {
       return $this->renderErrorPanel(
-        pht('Missing Panel'),
-        pht('This panel does not exist.'));
+        pht('Missing or Restricted Panel'),
+        pht(
+          'This panel does not exist, or you do not have permission '.
+          'to see it.'));
     }
 
     $panel_type = $panel->getImplementation();
@@ -166,10 +168,13 @@
     }
     $icon = id(new PHUIIconView())
       ->setIcon('fa-warning red msr');
+
     $content = id(new PHUIBoxView())
       ->addClass('dashboard-box')
+      ->addMargin(PHUI::MARGIN_MEDIUM)
       ->appendChild($icon)
       ->appendChild($body);
+
     return $this->renderPanelDiv(
       $content,
       $header);
@@ -203,10 +208,17 @@
       $box->appendChild($content);
     }
 
-    $box->setHeader($header)
+    $box
+      ->setHeader($header)
       ->setID($id)
-      ->addSigil('dashboard-panel')
-      ->setMetadata(array('objectPHID' => $panel->getPHID()));
+      ->addSigil('dashboard-panel');
+
+    if ($panel) {
+      $box->setMetadata(
+        array(
+          'objectPHID' => $panel->getPHID(),
+        ));
+    }
 
     return phutil_tag_div('dashboard-pane', $box);
   }
diff --git a/src/applications/dashboard/engine/PhabricatorDashboardRenderingEngine.php b/src/applications/dashboard/engine/PhabricatorDashboardRenderingEngine.php
--- a/src/applications/dashboard/engine/PhabricatorDashboardRenderingEngine.php
+++ b/src/applications/dashboard/engine/PhabricatorDashboardRenderingEngine.php
@@ -32,7 +32,7 @@
     $dashboard_id = celerity_generate_unique_node_id();
     $result = id(new AphrontMultiColumnView())
       ->setID($dashboard_id)
-      ->setFluidlayout(true)
+      ->setFluidLayout(true)
       ->setGutter(AphrontMultiColumnView::GUTTER_LARGE);
 
     if ($this->arrangeMode) {
@@ -43,17 +43,27 @@
 
     foreach ($panel_grid_locations as $column => $panel_column_locations) {
       $panel_phids = $panel_column_locations;
-      $column_panels = array_select_keys($panels, $panel_phids);
+
+      // TODO: This list may contain duplicates when the dashboard itself
+      // does not? Perhaps this is related to T10612. For now, just unique
+      // the list before moving on.
+      $panel_phids = array_unique($panel_phids);
+
       $column_result = array();
-      foreach ($column_panels as $panel) {
-        $column_result[] = id(new PhabricatorDashboardPanelRenderingEngine())
+      foreach ($panel_phids as $panel_phid) {
+        $panel_engine = id(new PhabricatorDashboardPanelRenderingEngine())
           ->setViewer($viewer)
-          ->setPanel($panel)
           ->setDashboardID($dashboard->getID())
           ->setEnableAsyncRendering(true)
           ->setParentPanelPHIDs(array())
-          ->setHeaderMode($h_mode)
-          ->renderPanel();
+          ->setHeaderMode($h_mode);
+
+        $panel = idx($panels, $panel_phid);
+        if ($panel) {
+          $panel_engine->setPanel($panel);
+        }
+
+        $column_result[] = $panel_engine->renderPanel();
       }
       $column_class = $layout_config->getColumnClass(
         $column,
diff --git a/src/applications/dashboard/query/PhabricatorDashboardQuery.php b/src/applications/dashboard/query/PhabricatorDashboardQuery.php
--- a/src/applications/dashboard/query/PhabricatorDashboardQuery.php
+++ b/src/applications/dashboard/query/PhabricatorDashboardQuery.php
@@ -70,8 +70,13 @@
 
       $panel_phids = $edge_query->getDestinationPHIDs();
       if ($panel_phids) {
+        // NOTE: We explicitly disable policy exceptions when loading panels.
+        // If a particular panel is invalid or not visible to the viewer,
+        // we'll still render the dashboard, just not that panel.
+
         $panels = id(new PhabricatorDashboardPanelQuery())
           ->setParentQuery($this)
+          ->setRaisePolicyExceptions(false)
           ->setViewer($this->getViewer())
           ->withPHIDs($panel_phids)
           ->execute();