diff --git a/core/lib/Drupal/Core/Config/ConfigImporter.php b/core/lib/Drupal/Core/Config/ConfigImporter.php
index 715138f..64f7252 100644
--- a/core/lib/Drupal/Core/Config/ConfigImporter.php
+++ b/core/lib/Drupal/Core/Config/ConfigImporter.php
@@ -434,7 +434,7 @@ protected function createExtensionChangelist() {
    * @return array
    *   An array of extension names.
    */
-  protected function getExtensionChangelist($type, $op = NULL) {
+  public function getExtensionChangelist($type, $op = NULL) {
     if ($op) {
       return $this->extensionChangelist[$type][$op];
     }
diff --git a/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php
index f17d5bd..4d0af11 100644
--- a/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php
@@ -8,6 +8,7 @@
 namespace Drupal\Core\EventSubscriber;
 
 use Drupal\Core\Config\Config;
+use Drupal\Core\Config\ConfigImporter;
 use Drupal\Core\Config\ConfigImporterEvent;
 use Drupal\Core\Config\ConfigImportValidateEventSubscriberBase;
 use Drupal\Core\Config\ConfigNameException;
@@ -16,7 +17,6 @@
  * Config import subscriber for config import events.
  */
 class ConfigImportSubscriber extends ConfigImportValidateEventSubscriberBase {
-
   /**
    * Validates the configuration to be imported.
    *
@@ -37,6 +37,79 @@ public function onConfigImporterValidate(ConfigImporterEvent $event) {
         }
       }
     }
+    $config_importer = $event->getConfigImporter();
+    $this->validateModuleInstalls($config_importer);
+    $this->validateThemeInstalls($config_importer);
+    $this->validateDependencies($config_importer);
+  }
+
+  protected function validateModuleInstalls(ConfigImporter $config_importer) {
+    $modules = system_rebuild_module_data();
+    foreach ($config_importer->getExtensionChangelist('module', 'install') as $module) {
+      if (!isset($modules[$module])) {
+        $config_importer->logError($this->t('Unable to install module %module since it does not exist.', array('%module' => $module)));
+      }
+    }
+  }
+
+  protected function validateThemeInstalls(ConfigImporter $config_importer) {
+    $themes = \Drupal::service('theme_handler')->rebuildThemeData();
+    foreach ($config_importer->getExtensionChangelist('theme', 'install') as $theme) {
+      if (!isset($themes[$theme])) {
+        $config_importer->logError($this->t('Unable to install theme %theme since it does not exist.', array('%theme' => $theme)));
+      }
+    }
+  }
+
+  protected function validateDependencies(ConfigImporter $config_importer) {
+    $themes = array_keys(\Drupal::service('theme_handler')->rebuildThemeData());
+    $available_config = $config_importer->getStorageComparer()->getSourceStorage()->listAll();
+    $modules = array_keys(system_rebuild_module_data());
+    $core_extension = $config_importer->getStorageComparer()->getSourceStorage()->read('core.extension');
+    $enabled_modules = array_keys($core_extension['module']);
+    $enabled_themes = array_keys($core_extension['theme']);
+    foreach (array('delete', 'create', 'update') as $op) {
+      foreach ($config_importer->getUnprocessedConfiguration($op) as $name) {
+        $data = $config_importer->getStorageComparer()->getSourceStorage()->read($name);
+        if (isset($data['dependencies']) && isset($data['uuid'])) {
+          $dependencies = $data['dependencies'];
+          if (isset($dependencies['module'])) {
+            // Ensure that the module is available and will be installed.
+            $diffs = array_diff($dependencies['module'], $modules);
+            if (!empty($diffs)) {
+              $config_importer->logError($this->t('Configuration %name depends on modules that do not exist.', array('%name' => $name)));
+            }
+            else {
+              $diffs = array_diff($dependencies['module'], $enabled_modules);
+              if (!empty($diffs)) {
+                $config_importer->logError($this->t('Configuration %name depends on modules that will not installed after import.', array('%name' => $name)));
+              }
+            }
+          }
+          if (isset($dependencies['theme'])) {
+            // Ensure that the theme is available and will be installed.
+            $diffs = array_diff($dependencies['theme'], $themes);
+            if (!empty($diffs)) {
+              $config_importer->logError($this->t('Configuration %name depends on themes that do not exist.', array('%name' => $name)));
+            }
+            else {
+              $diffs = array_diff($dependencies['theme'], $enabled_themes);
+              if (!empty($diffs)) {
+                $config_importer->logError($this->t('Configuration %name depends on themes that will not installed after import.', array('%name' => $name)));
+              }
+            }
+          }
+          if (isset($dependencies['config'])) {
+            // Ensure that the config exists.
+            $diffs = array_diff($dependencies['config'], $available_config);
+            if (!empty($diffs)) {
+              $config_importer->logError($this->t('Configuration %name depends on configuration that will not exist after import.', array('%name' => $name)));
+            }
+          }
+        }
+      }
+    }
+
   }
 
 }