diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index d48ae83..a69a8ef 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -963,7 +963,7 @@ function install_base_system(&$install_state) {
 
   // Enable the user module so that sessions can be recorded during the
   // upcoming bootstrap step.
-  \Drupal::moduleHandler()->install(array('user'), FALSE);
+  \Drupal::moduleHandler()->install(array('field', 'user'), FALSE);
 
   // Save the list of other modules to install for the upcoming tasks.
   // State can be set to the database now that system.module is installed.
diff --git a/core/lib/Drupal/Core/Extension/ModuleHandler.php b/core/lib/Drupal/Core/Extension/ModuleHandler.php
index 62cdd06..2646ad3 100644
--- a/core/lib/Drupal/Core/Extension/ModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandler.php
@@ -651,21 +651,18 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
         return TRUE;
       }
 
-      // Conditionally add the dependencies to the list of modules.
-      if ($enable_dependencies) {
-        // Add dependencies to the list. The new modules will be processed as
-        // the while loop continues.
-        while (list($module) = each($module_list)) {
-          foreach (array_keys($module_data[$module]->requires) as $dependency) {
-            if (!isset($module_data[$dependency])) {
-              // The dependency does not exist.
-              return FALSE;
-            }
+      // Add dependencies to the list. The new modules will be processed as
+      // the while loop continues.
+      while (list($module) = each($module_list)) {
+        foreach (array_keys($module_data[$module]->requires) as $dependency) {
+          if (!isset($module_data[$dependency])) {
+            // The dependency does not exist.
+            return FALSE;
+          }
 
-            // Skip already installed modules.
-            if (!isset($module_list[$dependency]) && !isset($installed_modules[$dependency])) {
-              $module_list[$dependency] = $dependency;
-            }
+          // Skip already installed modules.
+          if (!isset($module_list[$dependency]) && !isset($installed_modules[$dependency])) {
+            $module_list[$dependency] = $dependency;
           }
         }
       }
diff --git a/core/modules/user/lib/Drupal/user/Tests/UserInstallTest.php b/core/modules/user/lib/Drupal/user/Tests/UserInstallTest.php
index 4e54ff8..5d41148 100644
--- a/core/modules/user/lib/Drupal/user/Tests/UserInstallTest.php
+++ b/core/modules/user/lib/Drupal/user/Tests/UserInstallTest.php
@@ -19,7 +19,7 @@ class UserInstallTest extends DrupalUnitTestBase {
    *
    * @var array
    */
-  public static $modules = array('user');
+  public static $modules = array('field', 'user');
 
   /**
    * {@inheritdoc}
@@ -51,11 +51,15 @@ public function testUserInstall() {
     $this->assertFalse(empty($anon->uuid), 'Anon user has a UUID');
     $this->assertFalse(empty($admin->uuid), 'Admin user has a UUID');
 
-    $this->assertEqual($anon->langcode, \Drupal::languageManager()->getDefaultLanguage()->id, 'Anon user language is the default.');
-    $this->assertEqual($admin->langcode, \Drupal::languageManager()->getDefaultLanguage()->id, 'Admin user language is the default.');
+    // Test that the anonymous and administrators languages are equal to the
+    // site's default language.
+    $this->assertEqual($anon->langcode, \Drupal::languageManager()->getDefaultLanguage()->id);
+    $this->assertEqual($admin->langcode, \Drupal::languageManager()->getDefaultLanguage()->id);
 
-    $this->assertEqual($admin->status, 1, 'Admin user is active.');
-    $this->assertEqual($anon->status, 0, 'Anon user is blocked.');
+    // Test that the administrator is active.
+    $this->assertEqual($admin->status, 1);
+    // Test that the anonymous user is blocked.
+    $this->assertEqual($anon->status, 0);
   }
 
 }
diff --git a/core/modules/user/lib/Drupal/user/UserStorage.php b/core/modules/user/lib/Drupal/user/UserStorage.php
index afd53b3..bad10da 100644
--- a/core/modules/user/lib/Drupal/user/UserStorage.php
+++ b/core/modules/user/lib/Drupal/user/UserStorage.php
@@ -99,7 +99,9 @@ function mapFromStorageRecords(array $records) {
    * {@inheritdoc}
    */
   public function save(EntityInterface $entity) {
-    if (!$entity->id()) {
+    // The anonymous user account is saved with the fixed user ID of 0.
+    // Therefore we need to check for NULL explicitly.
+    if ($entity->id() === NULL) {
       $entity->uid->value = $this->database->nextId($this->database->query('SELECT MAX(uid) FROM {users}')->fetchField());
       $entity->enforceIsNew();
     }
diff --git a/core/modules/user/user.info.yml b/core/modules/user/user.info.yml
index 45a421a..0c7b4cf 100644
--- a/core/modules/user/user.info.yml
+++ b/core/modules/user/user.info.yml
@@ -6,3 +6,5 @@ version: VERSION
 core: 8.x
 required: true
 configure: user.admin_index
+dependencies:
+ - field
diff --git a/core/modules/user/user.install b/core/modules/user/user.install
index 97515a2..a84542f 100644
--- a/core/modules/user/user.install
+++ b/core/modules/user/user.install
@@ -220,28 +220,25 @@ function user_schema() {
  * Implements hook_install().
  */
 function user_install() {
+  $storage = \Drupal::entityManager()->getStorage('user');
+  $langcode = \Drupal::languageManager()->getDefaultLanguage()->id;
   // Insert a row for the anonymous user.
-  db_insert('users')
-    ->fields(array(
+  $storage
+    ->create(array(
       'uid' => 0,
-      'uuid' => \Drupal::service('uuid')->generate(),
-      'name' => '',
-      'mail' => '',
-      'langcode' => \Drupal::languageManager()->getDefaultLanguage()->id,
+      'status' => 0,
+      'langcode' => $langcode,
     ))
-    ->execute();
+    ->save();
 
   // We need some placeholders here as name and mail are uniques.
   // This will be changed by the settings form in the installer.
-  db_insert('users')
-    ->fields(array(
+  $storage
+    ->create(array(
       'uid' => 1,
-      'uuid' => \Drupal::service('uuid')->generate(),
       'name' => 'placeholder-for-uid-1',
       'mail' => 'placeholder-for-uid-1',
-      'created' => REQUEST_TIME,
-      'status' => 1,
-      'langcode' => \Drupal::languageManager()->getDefaultLanguage()->id,
+      'langcode' => $langcode,
     ))
-    ->execute();
+    ->save();
 }