diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index c608052cfb6e50af3c1927b2149a0423adbb092f..f2a5a6a64d73953d3d4566b2391b94705c657ea6 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -6,6 +6,11 @@
  */
 
 use Drupal\Component\Utility\UrlHelper;
+use Drupal\Core\Batch\BatchBuilder;
+use Drupal\Core\Config\ConfigImporter;
+use Drupal\Core\Config\ConfigImporterException;
+use Drupal\Core\Config\Importer\ConfigImporterBatch;
+use Drupal\Core\Config\StorageComparer;
 use Drupal\Core\DrupalKernel;
 use Drupal\Core\Database\Database;
 use Drupal\Core\Database\DatabaseExceptionWrapper;
@@ -198,6 +203,10 @@ function install_state_defaults() {
     // The last task that was completed during the previous installation
     // request.
     'completed_task' => NULL,
+    // Partial configuration cached during an installation from existing config.
+    'config' => NULL,
+    // The path to the configuration to install when installing from config.
+    'config_install_path' => NULL,
     // TRUE when there are valid config directories.
     'config_verified' => FALSE,
     // TRUE when there is a valid database connection.
@@ -473,9 +482,13 @@ function install_begin_request($class_loader, &$install_state) {
   // @todo Remove as part of https://www.drupal.org/node/2186491
   drupal_get_filename('module', 'system', 'core/modules/system/system.info.yml');
 
-  // Use the language from the profile configuration, if available, to override
-  // the language previously set in the parameters.
-  if (isset($install_state['profile_info']['distribution']['langcode'])) {
+  // Use the language from profile configuration if available.
+  if (!empty($install_state['config_install_path']) && $install_state['config']['system.site']) {
+    $install_state['parameters']['langcode'] = $install_state['config']['system.site']['default_langcode'];
+  }
+  elseif (isset($install_state['profile_info']['distribution']['langcode'])) {
+    // Otherwise, Use the language from the profile configuration, if available,
+    // to override the language previously set in the parameters.
     $install_state['parameters']['langcode'] = $install_state['profile_info']['distribution']['langcode'];
   }
 
@@ -818,6 +831,30 @@ function install_tasks($install_state) {
     ],
   ];
 
+  if (!empty($install_state['config_install_path'])) {
+    // The chosen profile indicates that rather than installing a new site, an
+    // instance of the same site should be installed from the given
+    // configuration.
+    // That means we need to remove the steps installing the extensions and
+    // replace them with a configuration synchronization step.
+    unset($tasks['install_download_translation']);
+    $key = array_search('install_profile_modules', array_keys($tasks), TRUE);
+    unset($tasks['install_profile_modules']);
+    unset($tasks['install_profile_themes']);
+    unset($tasks['install_install_profile']);
+    $config_tasks = [
+      'install_config_import_batch' => [
+        'display_name' => t('Install configuration'),
+        'type' => 'batch',
+      ],
+      'install_config_download_translations' => [],
+      'install_config_revert_install_changes' => [],
+    ];
+    $tasks = array_slice($tasks, 0, $key, TRUE) +
+      $config_tasks +
+      array_slice($tasks, $key, NULL, TRUE);
+  }
+
   // Now add any tasks defined by the installation profile.
   if (!empty($install_state['parameters']['profile'])) {
     // Load the profile install file, because it is not always loaded when
@@ -1494,6 +1531,14 @@ function install_load_profile(&$install_state) {
   $profile = $install_state['parameters']['profile'];
   $install_state['profiles'][$profile]->load();
   $install_state['profile_info'] = install_profile_info($profile, isset($install_state['parameters']['langcode']) ? $install_state['parameters']['langcode'] : 'en');
+  // If the profile has a config/sync directory copy the information to the
+  // install_state global.
+  if (!empty($install_state['profile_info']['config_install_path'])) {
+    $install_state['config_install_path'] = $install_state['profile_info']['config_install_path'];
+    if (!empty($install_state['profile_info']['config'])) {
+      $install_state['config'] = $install_state['profile_info']['config'];
+    }
+  }
 }
 
 /**
@@ -2260,3 +2305,134 @@ function install_write_profile($install_state) {
     throw new InstallProfileMismatchException($install_state['parameters']['profile'], $settings_profile, $settings_path, \Drupal::translation());
   }
 }
+
+/**
+ * Creates a batch for the config importer to process.
+ *
+ * @see install_tasks()
+ */
+function install_config_import_batch() {
+  // We need to manually trigger the installation of core-provided entity types,
+  // as those will not be handled by the module installer.
+  // @see install_profile_modules()
+  install_core_entity_type_definitions();
+
+  // Get the sync storage.
+  $sync = \Drupal::service('config.storage.sync');
+  // Match up the site UUIDs, the install_base_system install task will have
+  // installed the system module and created a new UUID.
+  $system_site = $sync->read('system.site');
+  \Drupal::configFactory()->getEditable('system.site')->set('uuid', $system_site['uuid'])->save();
+
+  // Create the storage comparer and the config importer.
+  $config_manager = \Drupal::service('config.manager');
+  $storage_comparer = new StorageComparer($sync, \Drupal::service('config.storage'), $config_manager);
+  $storage_comparer->createChangelist();
+  $config_importer = new ConfigImporter(
+    $storage_comparer,
+    \Drupal::service('event_dispatcher'),
+    $config_manager,
+    \Drupal::service('lock.persistent'),
+    \Drupal::service('config.typed'),
+    \Drupal::service('module_handler'),
+    \Drupal::service('module_installer'),
+    \Drupal::service('theme_handler'),
+    \Drupal::service('string_translation')
+  );
+
+  try {
+    $sync_steps = $config_importer->initialize();
+
+    $batch_builder = new BatchBuilder();
+    $batch_builder
+      ->setFinishCallback([ConfigImporterBatch::class, 'finish'])
+      ->setTitle(t('Importing configuration'))
+      ->setInitMessage(t('Starting configuration import.'))
+      ->setErrorMessage(t('Configuration import has encountered an error.'));
+
+    foreach ($sync_steps as $sync_step) {
+      $batch_builder->addOperation([ConfigImporterBatch::class, 'process'], [$config_importer, $sync_step]);
+    }
+
+    return $batch_builder->toArray();
+  }
+  catch (ConfigImporterException $e) {
+    global $install_state;
+    // There are validation errors.
+    $messenger = \Drupal::messenger();
+    $messenger->addError(t('The configuration synchronization failed validation.'));
+    foreach ($config_importer->getErrors() as $message) {
+      $messenger->addError($message);
+    }
+    install_display_output(['#title' => t('Configuration validation')], $install_state);
+  }
+}
+
+/**
+ * Replaces install_download_translation() during configuration installs.
+ *
+ * @param array $install_state
+ *   An array of information about the current installation state.
+ *
+ * @return string
+ *   A themed status report, or an exception if there are requirement errors.
+ *   Upon successful download the page is reloaded and no output is returned.
+ *
+ * @see install_download_translation()
+ */
+function install_config_download_translations(&$install_state) {
+  $needs_download = isset($install_state['parameters']['langcode']) && !isset($install_state['translations'][$install_state['parameters']['langcode']]) && $install_state['parameters']['langcode'] !== 'en';
+  if ($needs_download) {
+    return install_download_translation($install_state);
+  }
+}
+
+/**
+ * Reverts configuration if hook_install() implementations have made changes.
+ *
+ * This step ensures that the final configuration matches the configuration
+ * provided to the installer.
+ */
+function install_config_revert_install_changes() {
+  global $install_state;
+
+  $config_manager = \Drupal::service('config.manager');
+  $storage_comparer = new StorageComparer(\Drupal::service('config.storage.sync'), \Drupal::service('config.storage'), $config_manager);
+  $storage_comparer->createChangelist();
+  if ($storage_comparer->hasChanges()) {
+    $config_importer = new ConfigImporter(
+      $storage_comparer,
+      \Drupal::service('event_dispatcher'),
+      $config_manager,
+      \Drupal::service('lock.persistent'),
+      \Drupal::service('config.typed'),
+      \Drupal::service('module_handler'),
+      \Drupal::service('module_installer'),
+      \Drupal::service('theme_handler'),
+      \Drupal::service('string_translation')
+    );
+    try {
+      $config_importer->import();
+    }
+    catch (ConfigImporterException $e) {
+      global $install_state;
+      $messenger = \Drupal::messenger();
+      // There are validation errors.
+      $messenger->addError(t('The configuration synchronization failed validation.'));
+      foreach ($config_importer->getErrors() as $message) {
+        $messenger->addError($message);
+      }
+      install_display_output(['#title' => t('Configuration validation')], $install_state);
+    }
+
+    // At this point the configuration should match completely.
+    if (\Drupal::moduleHandler()->moduleExists('language')) {
+      // If the English language exists at this point we need to ensure
+      // install_download_additional_translations_operations() does not delete
+      // it.
+      if (ConfigurableLanguage::load('en')) {
+        $install_state['profile_info']['keep_english'] = TRUE;
+      }
+    }
+  }
+}
diff --git a/core/includes/install.inc b/core/includes/install.inc
index 56b450ec95c150aafacaa306b77e4ffd0e7b6c25..d65c85fff971eef31d0688668f56be8ded94429c 100644
--- a/core/includes/install.inc
+++ b/core/includes/install.inc
@@ -10,6 +10,7 @@
 use Drupal\Component\Utility\Crypt;
 use Drupal\Component\Utility\OpCodeCache;
 use Drupal\Component\Utility\UrlHelper;
+use Drupal\Core\Config\FileStorage;
 use Drupal\Core\Extension\ExtensionDiscovery;
 use Drupal\Core\Site\Settings;
 
@@ -481,12 +482,20 @@ function _drupal_rewrite_settings_dump_one(\stdClass $variable, $prefix = '', $s
  * @see update_prepare_d8_bootstrap()
  */
 function drupal_install_config_directories() {
-  global $config_directories;
+  global $config_directories, $install_state;
 
-  // Add a randomized config directory name to settings.php, unless it was
-  // manually defined in the existing already.
+  // If settings.php does not contain a config sync directory name we need to
+  // configure one.
   if (empty($config_directories[CONFIG_SYNC_DIRECTORY])) {
-    $config_directories[CONFIG_SYNC_DIRECTORY] = \Drupal::service('site.path') . '/files/config_' . Crypt::randomBytesBase64(55) . '/sync';
+    if (empty($install_state['config_install_path'])) {
+      // Add a randomized config directory name to settings.php
+      $config_directories[CONFIG_SYNC_DIRECTORY] = \Drupal::service('site.path') . '/files/config_' . Crypt::randomBytesBase64(55) . '/sync';
+    }
+    else {
+      // Install profiles can contain a config sync directory. If they do,
+      // 'config_install_path' is a path to the directory.
+      $config_directories[CONFIG_SYNC_DIRECTORY] = $install_state['config_install_path'];
+    }
     $settings['config_directories'][CONFIG_SYNC_DIRECTORY] = (object) [
       'value' => $config_directories[CONFIG_SYNC_DIRECTORY],
       'required' => TRUE,
@@ -1099,9 +1108,10 @@ function install_profile_info($profile, $langcode = 'en') {
       'version' => NULL,
       'hidden' => FALSE,
       'php' => DRUPAL_MINIMUM_PHP,
+      'config_install_path' => NULL,
     ];
-    $profile_file = drupal_get_path('profile', $profile) . "/$profile.info.yml";
-    $info = \Drupal::service('info_parser')->parse($profile_file);
+    $profile_path = drupal_get_path('profile', $profile);
+    $info = \Drupal::service('info_parser')->parse("$profile_path/$profile.info.yml");
     $info += $defaults;
 
     // drupal_required_modules() includes the current profile as a dependency.
@@ -1114,6 +1124,12 @@ function install_profile_info($profile, $langcode = 'en') {
     // remove any duplicates.
     $info['install'] = array_unique(array_merge($info['install'], $required, $info['dependencies'], $locale));
 
+    // If the profile has a config/sync directory use that to install drupal.
+    if (is_dir($profile_path . '/config/sync')) {
+      $info['config_install_path'] = $profile_path . '/config/sync';
+      $sync = new FileStorage($profile_path . '/config/sync');
+      $info['config']['system.site'] = $sync->read('system.site');
+    }
     $cache[$profile][$langcode] = $info;
   }
   return $cache[$profile][$langcode];
diff --git a/core/lib/Drupal/Core/Config/ConfigImporter.php b/core/lib/Drupal/Core/Config/ConfigImporter.php
index b58f96358ba72636ac775d69fb39e00ca8140989..c09372775068c5bdbdcd61a8c81f4de963a79ee7 100644
--- a/core/lib/Drupal/Core/Config/ConfigImporter.php
+++ b/core/lib/Drupal/Core/Config/ConfigImporter.php
@@ -405,6 +405,14 @@ protected function createExtensionChangelist() {
     $module_list = array_reverse($module_list);
     $this->extensionChangelist['module']['install'] = array_intersect(array_keys($module_list), $install);
 
+    // If we're installing the install profile ensure it comes last. This will
+    // occur when installing a site from configuration.
+    $install_profile_key = array_search($new_extensions['profile'], $this->extensionChangelist['module']['install'], TRUE);
+    if ($install_profile_key !== FALSE) {
+      unset($this->extensionChangelist['module']['install'][$install_profile_key]);
+      $this->extensionChangelist['module']['install'][] = $new_extensions['profile'];
+    }
+
     // Work out what themes to install and to uninstall.
     $this->extensionChangelist['theme']['install'] = array_keys(array_diff_key($new_extensions['theme'], $current_extensions['theme']));
     $this->extensionChangelist['theme']['uninstall'] = array_keys(array_diff_key($current_extensions['theme'], $new_extensions['theme']));
diff --git a/core/lib/Drupal/Core/Config/Importer/ConfigImporterBatch.php b/core/lib/Drupal/Core/Config/Importer/ConfigImporterBatch.php
new file mode 100644
index 0000000000000000000000000000000000000000..8aee289e0d14b32f9409c94ce8343be171ae4d09
--- /dev/null
+++ b/core/lib/Drupal/Core/Config/Importer/ConfigImporterBatch.php
@@ -0,0 +1,77 @@
+<?php
+
+namespace Drupal\Core\Config\Importer;
+
+use Drupal\Core\Config\ConfigImporter;
+
+/**
+ * Methods for running the ConfigImporter in a batch.
+ *
+ * @see \Drupal\Core\Config\ConfigImporter
+ */
+class ConfigImporterBatch {
+
+  /**
+   * Processes the config import batch and persists the importer.
+   *
+   * @param \Drupal\Core\Config\ConfigImporter $config_importer
+   *   The batch config importer object to persist.
+   * @param string $sync_step
+   *   The synchronization step to do.
+   * @param array $context
+   *   The batch context.
+   */
+  public static function process(ConfigImporter $config_importer, $sync_step, &$context) {
+    if (!isset($context['sandbox']['config_importer'])) {
+      $context['sandbox']['config_importer'] = $config_importer;
+    }
+
+    $config_importer = $context['sandbox']['config_importer'];
+    $config_importer->doSyncStep($sync_step, $context);
+    if ($errors = $config_importer->getErrors()) {
+      if (!isset($context['results']['errors'])) {
+        $context['results']['errors'] = [];
+      }
+      $context['results']['errors'] = array_merge($errors, $context['results']['errors']);
+    }
+  }
+
+  /**
+   * Finish batch.
+   *
+   * This function is a static function to avoid serializing the ConfigSync
+   * object unnecessarily.
+   *
+   * @param bool $success
+   *   Indicate that the batch API tasks were all completed successfully.
+   * @param array $results
+   *   An array of all the results that were updated in update_do_one().
+   * @param array $operations
+   *   A list of the operations that had not been completed by the batch API.
+   */
+  public static function finish($success, $results, $operations) {
+    $messenger = \Drupal::messenger();
+    if ($success) {
+      if (!empty($results['errors'])) {
+        $logger = \Drupal::logger('config_sync');
+        foreach ($results['errors'] as $error) {
+          $messenger->addError($error);
+          $logger->error($error);
+        }
+        $messenger->addWarning(t('The configuration was imported with errors.'));
+      }
+      elseif (!drupal_installation_attempted()) {
+        // Display a success message when not installing Drupal.
+        $messenger->addStatus(t('The configuration was imported successfully.'));
+      }
+    }
+    else {
+      // An error occurred.
+      // $operations contains the operations that remained unprocessed.
+      $error_operation = reset($operations);
+      $message = t('An error occurred while processing %error_operation with arguments: @arguments', ['%error_operation' => $error_operation[0], '@arguments' => print_r($error_operation[1], TRUE)]);
+      $messenger->addError($message);
+    }
+  }
+
+}
diff --git a/core/lib/Drupal/Core/Installer/Form/SiteConfigureForm.php b/core/lib/Drupal/Core/Installer/Form/SiteConfigureForm.php
index d5f8f56a791d66b712bb4183d1a39b341727d535..2cca962599934cae8bf9be19ca85be15122031d9 100644
--- a/core/lib/Drupal/Core/Installer/Form/SiteConfigureForm.php
+++ b/core/lib/Drupal/Core/Installer/Form/SiteConfigureForm.php
@@ -121,6 +121,7 @@ protected function getEditableConfigNames() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, FormStateInterface $form_state) {
+    global $install_state;
     $form['#title'] = $this->t('Configure site');
 
     // Warn about settings.php permissions risk
@@ -148,12 +149,14 @@ public function buildForm(array $form, FormStateInterface $form_state) {
     $form['site_information'] = [
       '#type' => 'fieldgroup',
       '#title' => $this->t('Site information'),
+      '#access' => empty($install_state['config_install_path']),
     ];
     $form['site_information']['site_name'] = [
       '#type' => 'textfield',
       '#title' => $this->t('Site name'),
       '#required' => TRUE,
       '#weight' => -20,
+      '#access' => empty($install_state['config_install_path']),
     ];
     $form['site_information']['site_mail'] = [
       '#type' => 'email',
@@ -162,6 +165,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       '#description' => $this->t("Automated emails, such as registration information, will be sent from this address. Use an address ending in your site's domain to help prevent these emails from being flagged as spam."),
       '#required' => TRUE,
       '#weight' => -15,
+      '#access' => empty($install_state['config_install_path']),
     ];
 
     $form['admin_account'] = [
@@ -191,6 +195,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
     $form['regional_settings'] = [
       '#type' => 'fieldgroup',
       '#title' => $this->t('Regional settings'),
+      '#access' => empty($install_state['config_install_path']),
     ];
     $countries = $this->countryManager->getList();
     $form['regional_settings']['site_default_country'] = [
@@ -201,6 +206,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       '#options' => $countries,
       '#description' => $this->t('Select the default country for the site.'),
       '#weight' => 0,
+      '#access' => empty($install_state['config_install_path']),
     ];
     $form['regional_settings']['date_default_timezone'] = [
       '#type' => 'select',
@@ -211,17 +217,20 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       '#description' => $this->t('By default, dates in this site will be displayed in the chosen time zone.'),
       '#weight' => 5,
       '#attributes' => ['class' => ['timezone-detect']],
+      '#access' => empty($install_state['config_install_path']),
     ];
 
     $form['update_notifications'] = [
       '#type' => 'fieldgroup',
       '#title' => $this->t('Update notifications'),
       '#description' => $this->t('The system will notify you when updates and important security releases are available for installed components. Anonymous information about your site is sent to <a href=":drupal">Drupal.org</a>.', [':drupal' => 'https://www.drupal.org']),
+      '#access' => empty($install_state['config_install_path']),
     ];
     $form['update_notifications']['enable_update_status_module'] = [
       '#type' => 'checkbox',
       '#title' => $this->t('Check for updates automatically'),
       '#default_value' => 1,
+      '#access' => empty($install_state['config_install_path']),
     ];
     $form['update_notifications']['enable_update_status_emails'] = [
       '#type' => 'checkbox',
@@ -232,6 +241,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
           'input[name="enable_update_status_module"]' => ['checked' => TRUE],
         ],
       ],
+      '#access' => empty($install_state['config_install_path']),
     ];
 
     $form['actions'] = ['#type' => 'actions'];
@@ -258,21 +268,25 @@ public function validateForm(array &$form, FormStateInterface $form_state) {
    * {@inheritdoc}
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
-    $this->config('system.site')
-      ->set('name', (string) $form_state->getValue('site_name'))
-      ->set('mail', (string) $form_state->getValue('site_mail'))
-      ->save(TRUE);
+    global $install_state;
 
-    $this->config('system.date')
-      ->set('timezone.default', (string) $form_state->getValue('date_default_timezone'))
-      ->set('country.default', (string) $form_state->getValue('site_default_country'))
-      ->save(TRUE);
+    if (empty($install_state['config_install_path'])) {
+      $this->config('system.site')
+        ->set('name', (string) $form_state->getValue('site_name'))
+        ->set('mail', (string) $form_state->getValue('site_mail'))
+        ->save(TRUE);
+
+      $this->config('system.date')
+        ->set('timezone.default', (string) $form_state->getValue('date_default_timezone'))
+        ->set('country.default', (string) $form_state->getValue('site_default_country'))
+        ->save(TRUE);
+    }
 
     $account_values = $form_state->getValue('account');
 
     // Enable update.module if this option was selected.
     $update_status_module = $form_state->getValue('enable_update_status_module');
-    if ($update_status_module) {
+    if (empty($install_state['config_install_path']) && $update_status_module) {
       $this->moduleInstaller->install(['file', 'update'], FALSE);
 
       // Add the site maintenance account's email address to the list of
diff --git a/core/modules/config/src/Form/ConfigSync.php b/core/modules/config/src/Form/ConfigSync.php
index 73c7a1b8b1ad7ff8fbf465fe1457fa6452d469ca..57fb1d860e000cfe74e59d9bcc8f2e74151328d2 100644
--- a/core/modules/config/src/Form/ConfigSync.php
+++ b/core/modules/config/src/Form/ConfigSync.php
@@ -4,6 +4,7 @@
 
 use Drupal\Core\Config\ConfigImporterException;
 use Drupal\Core\Config\ConfigImporter;
+use Drupal\Core\Config\Importer\ConfigImporterBatch;
 use Drupal\Core\Config\TypedConfigManagerInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Extension\ModuleInstallerInterface;
@@ -337,14 +338,14 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
         $sync_steps = $config_importer->initialize();
         $batch = [
           'operations' => [],
-          'finished' => [get_class($this), 'finishBatch'],
+          'finished' => [ConfigImporterBatch::class, 'finish'],
           'title' => t('Synchronizing configuration'),
           'init_message' => t('Starting configuration synchronization.'),
           'progress_message' => t('Completed step @current of @total.'),
           'error_message' => t('Configuration synchronization has encountered an error.'),
         ];
         foreach ($sync_steps as $sync_step) {
-          $batch['operations'][] = [[get_class($this), 'processBatch'], [$config_importer, $sync_step]];
+          $batch['operations'][] = [[ConfigImporterBatch::class, 'process'], [$config_importer, $sync_step]];
         }
 
         batch_set($batch);
@@ -368,20 +369,15 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
    *   The synchronization step to do.
    * @param array $context
    *   The batch context.
+   *
+   * @deprecated in Drupal 8.6.0 and will be removed before 9.0.0. Use
+   *   \Drupal\Core\Config\Importer\ConfigImporterBatch::process() instead.
+   *
+   * @see https://www.drupal.org/node/2897299
    */
   public static function processBatch(ConfigImporter $config_importer, $sync_step, &$context) {
-    if (!isset($context['sandbox']['config_importer'])) {
-      $context['sandbox']['config_importer'] = $config_importer;
-    }
-
-    $config_importer = $context['sandbox']['config_importer'];
-    $config_importer->doSyncStep($sync_step, $context);
-    if ($errors = $config_importer->getErrors()) {
-      if (!isset($context['results']['errors'])) {
-        $context['results']['errors'] = [];
-      }
-      $context['results']['errors'] = array_merge($context['results']['errors'], $errors);
-    }
+    @trigger_error('\Drupal\config\Form\ConfigSync::processBatch() deprecated in Drupal 8.6.0 and will be removed before 9.0.0. Use \Drupal\Core\Config\Importer\ConfigImporterBatch::process() instead. See https://www.drupal.org/node/2897299');
+    ConfigImporterBatch::process($config_importer, $sync_step, $context);
   }
 
   /**
@@ -389,27 +385,15 @@ public static function processBatch(ConfigImporter $config_importer, $sync_step,
    *
    * This function is a static function to avoid serializing the ConfigSync
    * object unnecessarily.
+   *
+   * @deprecated in Drupal 8.6.0 and will be removed before 9.0.0. Use
+   *   \Drupal\Core\Config\Importer\ConfigImporterBatch::finish() instead.
+   *
+   * @see https://www.drupal.org/node/2897299
    */
   public static function finishBatch($success, $results, $operations) {
-    if ($success) {
-      if (!empty($results['errors'])) {
-        foreach ($results['errors'] as $error) {
-          \Drupal::messenger()->addError($error);
-          \Drupal::logger('config_sync')->error($error);
-        }
-        \Drupal::messenger()->addWarning(\Drupal::translation()->translate('The configuration was imported with errors.'));
-      }
-      else {
-        \Drupal::messenger()->addStatus(\Drupal::translation()->translate('The configuration was imported successfully.'));
-      }
-    }
-    else {
-      // An error occurred.
-      // $operations contains the operations that remained unprocessed.
-      $error_operation = reset($operations);
-      $message = \Drupal::translation()->translate('An error occurred while processing %error_operation with arguments: @arguments', ['%error_operation' => $error_operation[0], '@arguments' => print_r($error_operation[1], TRUE)]);
-      \Drupal::messenger()->addError($message);
-    }
+    @trigger_error('\Drupal\config\Form\ConfigSync::finishBatch() deprecated in Drupal 8.6.0 and will be removed before 9.0.0. Use \Drupal\Core\Config\Importer\ConfigImporterBatch::finish() instead. See https://www.drupal.org/node/2897299');
+    ConfigImporterBatch::finish($success, $results, $operations);
   }
 
 }
diff --git a/core/modules/config/tests/src/Kernel/ConfigUninstallViaCliImportTest.php b/core/modules/config/tests/src/Kernel/ConfigUninstallViaCliImportTest.php
index 5f77447f316f0f4e0d76655199d25dcb6aebca8b..0ab0fd1764e8068c68c8fb23f1db943f6f4a52de 100644
--- a/core/modules/config/tests/src/Kernel/ConfigUninstallViaCliImportTest.php
+++ b/core/modules/config/tests/src/Kernel/ConfigUninstallViaCliImportTest.php
@@ -32,6 +32,7 @@ protected function setUp() {
       $this->markTestSkipped('This test has to be run from the CLI');
     }
 
+    $this->installConfig(['system']);
     $this->copyConfig($this->container->get('config.storage'), $this->container->get('config.storage.sync'));
 
     // Set up the ConfigImporter object for testing.
diff --git a/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php b/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php
index ee4392738bf3b5d5228ff390983e6b6c246a3a9b..1b2125b7dd5387e58c6e9985bdd4cc388b58c1f3 100644
--- a/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php
+++ b/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php
@@ -59,7 +59,7 @@ protected function setUp() {
     $this->installEntitySchema('node');
     $this->installEntitySchema('user');
     $this->installEntitySchema('content_moderation_state');
-    $this->installConfig('content_moderation');
+    $this->installConfig(['system', 'content_moderation']);
 
     NodeType::create([
       'type' => 'example',
diff --git a/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php b/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php
index 44e816089ec1db2bf8dc335e4274940c17a95267..0fe6b9f6e0b33985dbf7e24fd63ab00d9b922731 100644
--- a/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php
+++ b/core/modules/content_translation/tests/src/Kernel/ContentTranslationConfigImportTest.php
@@ -33,6 +33,7 @@ class ContentTranslationConfigImportTest extends KernelTestBase {
   protected function setUp() {
     parent::setUp();
 
+    $this->installConfig(['system']);
     $this->installEntitySchema('entity_test_mul');
     $this->copyConfig($this->container->get('config.storage'), $this->container->get('config.storage.sync'));
 
diff --git a/core/modules/node/tests/src/Kernel/Config/NodeImportChangeTest.php b/core/modules/node/tests/src/Kernel/Config/NodeImportChangeTest.php
index e1b17f2c1c9a60e3ac90efe75d694f25bc06bd76..d670e6a44cae81d23084fd28ca53c9233b044e20 100644
--- a/core/modules/node/tests/src/Kernel/Config/NodeImportChangeTest.php
+++ b/core/modules/node/tests/src/Kernel/Config/NodeImportChangeTest.php
@@ -26,7 +26,7 @@ protected function setUp() {
     parent::setUp();
 
     // Set default storage backend.
-    $this->installConfig(['field', 'node_test_config']);
+    $this->installConfig(['system', 'field', 'node_test_config']);
   }
 
   /**
diff --git a/core/modules/node/tests/src/Kernel/Config/NodeImportCreateTest.php b/core/modules/node/tests/src/Kernel/Config/NodeImportCreateTest.php
index cb985173ae96c9eeeafe005a17b4e9f0abf1939c..0b27bc2a22c784dbda4147f9aac8dfd97a21862b 100644
--- a/core/modules/node/tests/src/Kernel/Config/NodeImportCreateTest.php
+++ b/core/modules/node/tests/src/Kernel/Config/NodeImportCreateTest.php
@@ -28,7 +28,7 @@ protected function setUp() {
     $this->installEntitySchema('user');
 
     // Set default storage backend.
-    $this->installConfig(['field']);
+    $this->installConfig(['system', 'field']);
   }
 
   /**
diff --git a/core/modules/system/src/SystemConfigSubscriber.php b/core/modules/system/src/SystemConfigSubscriber.php
index 519155b8497c9e92a29e2aa3d85b6f867abc540a..0ab0d15fc6105dd9725adfadf09edf2d36daf14f 100644
--- a/core/modules/system/src/SystemConfigSubscriber.php
+++ b/core/modules/system/src/SystemConfigSubscriber.php
@@ -72,6 +72,9 @@ public function onConfigImporterValidateNotEmpty(ConfigImporterEvent $event) {
    *   The config import event.
    */
   public function onConfigImporterValidateSiteUUID(ConfigImporterEvent $event) {
+    if (!$event->getConfigImporter()->getStorageComparer()->getSourceStorage()->exists('system.site')) {
+      $event->getConfigImporter()->logError($this->t('This import does not contain system.site configuration, so has been rejected.'));
+    }
     if (!$event->getConfigImporter()->getStorageComparer()->validateSiteUuid()) {
       $event->getConfigImporter()->logError($this->t('Site UUID in source storage does not match the target storage.'));
     }
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 3ad360ff242e54b22772e83196f7e581bdc1db50..0fe129b0b6d000f1f156734d24508a1b2b8e59f1 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -1002,6 +1002,19 @@ function system_requirements($phase) {
     ];
   }
 
+  // During installs from configuration don't support install profiles that
+  // implement hook_install.
+  if ($phase == 'install' && !empty($install_state['config_install_path'])) {
+    $install_hook = $install_state['parameters']['profile'] . '_install';
+    if (function_exists($install_hook)) {
+      $requirements['config_install'] = [
+        'title' => t('Configuration install'),
+        'value' => $install_state['parameters']['profile'],
+        'description' => t('The selected profile has a hook_install() implementation and therefore can not be installed from configuration.'),
+        'severity' => REQUIREMENT_ERROR,
+      ];
+    }
+  }
   return $requirements;
 }
 
diff --git a/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigMultilingualTest.php b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigMultilingualTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..db05d32031e6c7f3109184217f26e489f472473b
--- /dev/null
+++ b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigMultilingualTest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\FunctionalTests\Installer;
+
+/**
+ * Verifies that installing from existing configuration works.
+ *
+ * @group Installer
+ */
+class InstallerExistingConfigMultilingualTest extends InstallerExistingConfigTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $profile = 'testing_config_install_multilingual';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getConfigTarball() {
+    return __DIR__ . '/../../../fixtures/config_install/multilingual.tar.gz';
+  }
+
+}
diff --git a/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigNoConfigTest.php b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigNoConfigTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..01ddefa9048a256fd1b169583c0a8187c783b6ab
--- /dev/null
+++ b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigNoConfigTest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Drupal\FunctionalTests\Installer;
+
+/**
+ * Verifies that profiles invalid config can not be installed.
+ *
+ * @group Installer
+ */
+class InstallerExistingConfigNoConfigTest extends InstallerExistingConfigTestBase {
+
+  protected $profile = 'no_config_profile';
+
+  /**
+   * Final installer step: Configure site.
+   */
+  protected function setUpSite() {
+    // There are errors therefore there is nothing to do here.
+    return;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getConfigTarball() {
+    return __DIR__ . '/../../../fixtures/config_install/testing_config_install_no_config.tar.gz';
+  }
+
+  /**
+   * Tests that profiles with an empty config/sync directory do not work.
+   */
+  public function testConfigSync() {
+    $this->assertTitle('Configuration validation | Drupal');
+    $this->assertText('The configuration synchronization failed validation.');
+    $this->assertText('This import is empty and if applied would delete all of your configuration, so has been rejected.');
+
+    // Ensure there is no continuation button.
+    $this->assertNoText('Save and continue');
+    $this->assertNoFieldById('edit-submit');
+  }
+
+}
diff --git a/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigNoSystemSiteTest.php b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigNoSystemSiteTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..4ac68d4e8637c48883e872b796bc3ebc819de984
--- /dev/null
+++ b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigNoSystemSiteTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Drupal\FunctionalTests\Installer;
+
+/**
+ * Testing installing from config without system.site.
+ *
+ * @group Installer
+ */
+class InstallerExistingConfigNoSystemSiteTest extends InstallerExistingConfigTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function prepareEnvironment() {
+    parent::prepareEnvironment();
+    // File API functions are not available yet.
+    unlink($this->siteDirectory . '/profiles/' . $this->profile . '/config/sync/system.site.yml');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setUpSite() {
+    return;
+  }
+
+  /**
+   * Tests that profiles with no system.site do not work.
+   */
+  public function testConfigSync() {
+    $this->htmlOutput(NULL);
+    $this->assertTitle('Configuration validation | Drupal');
+    $this->assertText('The configuration synchronization failed validation.');
+    $this->assertText('This import does not contain system.site configuration, so has been rejected.');
+
+    // Ensure there is no continuation button.
+    $this->assertNoText('Save and continue');
+    $this->assertNoFieldById('edit-submit');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getConfigTarball() {
+    return __DIR__ . '/../../../fixtures/config_install/testing_config_install.tar.gz';
+  }
+
+}
diff --git a/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigProfileHookInstall.php b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigProfileHookInstall.php
new file mode 100644
index 0000000000000000000000000000000000000000..2d9d6cdfc121c4480fecdf4e60047033456619e5
--- /dev/null
+++ b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigProfileHookInstall.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace Drupal\FunctionalTests\Installer;
+
+/**
+ * Verifies that profiles with hook_install() can't be installed from config.
+ *
+ * @group Installer
+ */
+class InstallerExistingConfigProfileHookInstall extends InstallerExistingConfigTestBase {
+
+  protected $profile = 'config_profile_with_hook_install';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function visitInstaller() {
+    // Create an .install file with a hook_install() implementation.
+    $path = $this->siteDirectory . '/profiles/' . $this->profile;
+    $contents = <<<EOF
+<?php
+
+function config_profile_with_hook_install_install() {
+}
+EOF;
+    file_put_contents("$path/{$this->profile}.install", $contents);
+    parent::visitInstaller();
+  }
+
+  /**
+   * Installer step: Configure settings.
+   */
+  protected function setUpSettings() {
+    // There are errors therefore there is nothing to do here.
+    return;
+  }
+
+  /**
+   * Final installer step: Configure site.
+   */
+  protected function setUpSite() {
+    // There are errors therefore there is nothing to do here.
+    return;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getConfigTarball() {
+    // We're not going to get to the config import stage so this does not
+    // matter.
+    return __DIR__ . '/../../../fixtures/config_install/testing_config_install_no_config.tar.gz';
+  }
+
+  /**
+   * Confirms the installation has failed and the expected error is displayed.
+   */
+  public function testConfigSync() {
+    $this->assertTitle('Requirements problem | Drupal');
+    $this->assertText($this->profile);
+    $this->assertText('The selected profile has a hook_install() implementation and therefore can not be installed from configuration.');
+  }
+
+}
diff --git a/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTest.php b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTest.php
new file mode 100644
index 0000000000000000000000000000000000000000..ebf4c2a8c5b4e9a92aed251bccee73e190d4d090
--- /dev/null
+++ b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTest.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Drupal\FunctionalTests\Installer;
+
+/**
+ * Verifies that installing from existing configuration works.
+ *
+ * @group Installer
+ */
+class InstallerExistingConfigTest extends InstallerExistingConfigTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setUpSite() {
+    // The configuration is from a site installed in French.
+    // So after selecting the profile the installer detects that the site must
+    // be installed in French, thus we change the button translation.
+    $this->translations['Save and continue'] = 'Enregistrer et continuer';
+    parent::setUpSite();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getConfigTarball() {
+    return __DIR__ . '/../../../fixtures/config_install/testing_config_install.tar.gz';
+  }
+
+}
diff --git a/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTestBase.php b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTestBase.php
new file mode 100644
index 0000000000000000000000000000000000000000..e093be966769d1f3175fe25b7b76730e0cfe2c66
--- /dev/null
+++ b/core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigTestBase.php
@@ -0,0 +1,99 @@
+<?php
+
+namespace Drupal\FunctionalTests\Installer;
+
+use Drupal\Component\Serialization\Yaml;
+use Drupal\Core\Archiver\ArchiveTar;
+
+/**
+ * Provides a base class for testing installing from existing configuration.
+ */
+abstract class InstallerExistingConfigTestBase extends InstallerTestBase {
+
+  /**
+   * This is set by the profile in the core.extension extracted.
+   */
+  protected $profile = NULL;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function prepareEnvironment() {
+    parent::prepareEnvironment();
+    $archiver = new ArchiveTar($this->getConfigTarball(), 'gz');
+
+    if ($this->profile === NULL) {
+      $core_extension = Yaml::decode($archiver->extractInString('core.extension.yml'));
+      $this->profile = $core_extension['profile'];
+    }
+
+    // Create a profile for testing.
+    $info = [
+      'type' => 'profile',
+      'core' => \Drupal::CORE_COMPATIBILITY,
+      'name' => 'Configuration installation test profile (' . $this->profile . ')',
+    ];
+    // File API functions are not available yet.
+    $path = $this->siteDirectory . '/profiles/' . $this->profile;
+
+    mkdir($path, 0777, TRUE);
+    file_put_contents("$path/{$this->profile}.info.yml", Yaml::encode($info));
+
+    // Create config/sync directory and extract tarball contents to it.
+    $config_sync_directory = $path . '/config/sync';
+    mkdir($config_sync_directory, 0777, TRUE);
+    $files = [];
+    $list = $archiver->listContent();
+    if (is_array($list)) {
+      /** @var array $list */
+      foreach ($list as $file) {
+        $files[] = $file['filename'];
+      }
+      $archiver->extractList($files, $config_sync_directory);
+    }
+  }
+
+  /**
+   * Gets the filepath to the configuration tarball.
+   *
+   * The tarball will be extracted to the install profile's config/sync
+   * directory for testing.
+   *
+   * @return string
+   *   The filepath to the configuration tarball.
+   */
+  abstract protected function getConfigTarball();
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function installParameters() {
+    $parameters = parent::installParameters();
+
+    // The options that change configuration are disabled when installing from
+    // existing configuration.
+    unset($parameters['forms']['install_configure_form']['site_name']);
+    unset($parameters['forms']['install_configure_form']['site_mail']);
+    unset($parameters['forms']['install_configure_form']['update_status_module']);
+
+    return $parameters;
+  }
+
+  /**
+   * Confirms that the installation installed the configuration correctly.
+   */
+  public function testConfigSync() {
+    // After installation there is no snapshot and nothing to import.
+    $change_list = $this->configImporter()->getStorageComparer()->getChangelist();
+    $expected = [
+      'create' => [],
+      // The system.mail is changed configuration because the test system
+      // changes it to ensure that mails are not sent.
+      'update' => ['system.mail'],
+      'delete' => [],
+      'rename' => [],
+    ];
+    $this->assertEqual($expected, $change_list);
+  }
+
+}
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRecreateTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRecreateTest.php
index 7d9c9ae23f763d17d73c60ed94d1b2f69ab8678e..fef464ed7f21fdca9bcc21a9271326f03b7430c1 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRecreateTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRecreateTest.php
@@ -32,7 +32,7 @@ protected function setUp() {
     parent::setUp();
 
     $this->installEntitySchema('node');
-    $this->installConfig(['field', 'node']);
+    $this->installConfig(['system', 'field', 'node']);
 
     $this->copyConfig($this->container->get('config.storage'), $this->container->get('config.storage.sync'));
 
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRenameValidationTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRenameValidationTest.php
index 84b5a2de1314c5596d65e636e803948d820bc624..f52b3956ab962d2a21dacf7fc0788aac8f39bae6 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRenameValidationTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigImportRenameValidationTest.php
@@ -39,7 +39,7 @@ protected function setUp() {
 
     $this->installEntitySchema('user');
     $this->installEntitySchema('node');
-    $this->installConfig(['field']);
+    $this->installConfig(['system', 'field']);
 
     // Set up the ConfigImporter object for testing.
     $storage_comparer = new StorageComparer(
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php
index 59f9cb2ed728e88fda04f1699c2fb2e3b32debf2..db09e3f9f66d89d0aef48641599b68f4d5f6a60b 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterMissingContentTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
     $this->installSchema('system', 'sequences');
     $this->installEntitySchema('entity_test');
     $this->installEntitySchema('user');
-    $this->installConfig(['config_test']);
+    $this->installConfig(['system', 'config_test']);
     // Installing config_test's default configuration pollutes the global
     // variable being used for recording hook invocations by this test already,
     // so it has to be cleared out manually.
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
index dc4e0ae12b9d64f95abc3764bb8c9b3402232209..6e8adf79a772960ec043de668d847edd1d652116 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
@@ -33,7 +33,7 @@ class ConfigImporterTest extends KernelTestBase {
   protected function setUp() {
     parent::setUp();
 
-    $this->installConfig(['config_test']);
+    $this->installConfig(['system', 'config_test']);
     // Installing config_test's default configuration pollutes the global
     // variable being used for recording hook invocations by this test already,
     // so it has to be cleared out manually.
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
index b2ddaa396ddd27c39e5115df37cdb622cfa5f09f..550e0d5b2b0f54406761fa629499c98d689ecdbc 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
@@ -20,6 +20,7 @@ class ConfigOverrideTest extends KernelTestBase {
 
   protected function setUp() {
     parent::setUp();
+    $this->installConfig(['system']);
     $this->copyConfig($this->container->get('config.storage'), $this->container->get('config.storage.sync'));
   }
 
diff --git a/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php b/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
index 62eff04d4178585f06152e417233add1ef88eeb3..645638d83239ab51485db64af724c62320a5d037 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
@@ -24,6 +24,7 @@ class ConfigSnapshotTest extends KernelTestBase {
    */
   protected function setUp() {
     parent::setUp();
+    $this->installConfig(['system']);
     // Update the config snapshot. This allows the parent::setUp() to write
     // configuration files.
     \Drupal::service('config.manager')->createSnapshot(\Drupal::service('config.storage'), \Drupal::service('config.storage.snapshot'));
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityNullStorageTest.php b/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityNullStorageTest.php
index 6da9bb3baad0fe7d1c9134b1acc19c7fd2d2c800..001d9ba3dee81b0b9f31650f6db133e3fb4f065c 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityNullStorageTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityNullStorageTest.php
@@ -43,6 +43,7 @@ public function testEntityQuery() {
    * @see \Drupal\Core\Entity\Event\BundleConfigImportValidate
    */
   public function testDeleteThroughImport() {
+    $this->installConfig(['system']);
     $contact_form = ContactForm::create(['id' => 'test']);
     $contact_form->save();
 
diff --git a/core/tests/fixtures/config_install/multilingual.tar.gz b/core/tests/fixtures/config_install/multilingual.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..d43aafa1e58ad82b62fa487bf9d28554e295e630
--- /dev/null
+++ b/core/tests/fixtures/config_install/multilingual.tar.gz
@@ -0,0 +1,52 @@
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+++ b/core/tests/fixtures/config_install/testing_config_install_no_config.tar.gz
@@ -0,0 +1 @@
+����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������
\ No newline at end of file