-

diff --git a/core/lib/Drupal/Core/Condition/ConditionAccessResolverTrait.php b/core/lib/Drupal/Core/Condition/ConditionAccessResolverTrait.php
index 106eeec..8cee282 100644
--- a/core/lib/Drupal/Core/Condition/ConditionAccessResolverTrait.php
+++ b/core/lib/Drupal/Core/Condition/ConditionAccessResolverTrait.php
@@ -26,8 +26,11 @@ protected function resolveConditions($conditions, $condition_logic) {
         $pass = $condition->execute();
       }
       catch (ContextException $e) {
-        // If a condition is missing context, consider that a fail.
-        $pass = FALSE;
+          // A condition is missing context. In case its negated, don't consider
+          // it as fail, but rather success. Let's choose for the
+          // "Not node:article" condition. In case we are on the frontpage, this
+          // condition should return TRUE.
+        $pass = $condition->isNegated();
       }
 
       // If a condition fails and all conditions were needed, deny access.
diff --git a/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php b/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php
index 00511d3..7bb9a2d 100644
--- a/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php
@@ -40,10 +40,22 @@ public function providerTestResolveConditions() {
       ->method('execute')
       ->will($this->returnValue(FALSE));
     $condition_exception = $this->getMock('Drupal\Core\Condition\ConditionInterface');
+    $condition_exception->expects($this->atLeastOnce())
+      ->method('isNegated')
+      ->willReturn(FALSE);
     $condition_exception->expects($this->any())
       ->method('execute')
       ->will($this->throwException(new ContextException()));
 
+    $condition_negated_exception = $this->getMock('Drupal\Core\Condition\ConditionInterface');
+    $condition_negated_exception->expects($this->atLeastOnce())
+      ->method('isNegated')
+      ->willReturn(TRUE);
+    $condition_negated_exception->expects($this->any())
+      ->method('execute')
+      ->will($this->throwException(new ContextException()));
+
+
     $conditions = array();
     $data[] = array($conditions, 'and', TRUE);
     $data[] = array($conditions, 'or', FALSE);
@@ -79,6 +91,26 @@ public function providerTestResolveConditions() {
     $conditions = array($condition_exception, $condition_false);
     $data[] = array($conditions, 'or', FALSE);
     $data[] = array($conditions, 'and', FALSE);
+
+    $conditions = array($condition_negated_exception);
+    $data[] = array($conditions, 'or', TRUE);
+    $data[] = array($conditions, 'and', TRUE);
+
+    $conditions = array($condition_true, $condition_negated_exception);
+    $data[] = array($conditions, 'or', TRUE);
+    $data[] = array($conditions, 'and', TRUE);
+
+    $conditions = array($condition_negated_exception, $condition_true);
+    $data[] = array($conditions, 'or', TRUE);
+    $data[] = array($conditions, 'and', TRUE);
+
+    $conditions = array($condition_false, $condition_negated_exception);
+    $data[] = array($conditions, 'or', TRUE);
+    $data[] = array($conditions, 'and', FALSE);
+
+    $conditions = array($condition_negated_exception, $condition_false);
+    $data[] = array($conditions, 'or', TRUE);
+    $data[] = array($conditions, 'and', FALSE);
     return $data;
   }