diff -u b/core/core.services.yml b/core/core.services.yml
--- b/core/core.services.yml
+++ b/core/core.services.yml
@@ -281,10 +281,15 @@
     arguments: ['@config.factory', '@module_handler', '@state', '@info_parser', '@logger.channel.default', '@asset.css.collection_optimizer', '@config.installer', '@router.builder']
   entity.manager:
     class: Drupal\Core\Entity\EntityManager
-    arguments: ['@container.namespaces', '@module_handler', '@cache.discovery', '@language_manager', '@string_translation', '@class_resolver', '@typed_data_manager', '@state']
+    arguments: ['@container.namespaces', '@module_handler', '@cache.discovery', '@language_manager', '@string_translation', '@class_resolver', '@typed_data_manager', '@entity.definitions.installed']
     parent: container.trait
     tags:
       - { name: plugin_manager_cache_clear }
+  entity.definitions.installed:
+    class: Drupal\Core\KeyValueStore\KeyValueStoreInterface
+    factory_method: get
+    factory_service: keyvalue
+    arguments: ['entity.definitions.installed']
   entity.definition_update_manager:
     class: Drupal\Core\Entity\EntityDefinitionUpdateManager
     arguments: ['@entity.manager']
diff -u b/core/lib/Drupal/Core/Entity/EntityManager.php b/core/lib/Drupal/Core/Entity/EntityManager.php
--- b/core/lib/Drupal/Core/Entity/EntityManager.php
+++ b/core/lib/Drupal/Core/Entity/EntityManager.php
@@ -22,7 +22,7 @@
 use Drupal\Core\Language\LanguageManagerInterface;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\Core\Plugin\DefaultPluginManager;
-use Drupal\Core\State\StateInterface;
+use Drupal\Core\KeyValueStore\KeyValueStoreInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
 use Drupal\Core\StringTranslation\TranslationInterface;
 use Drupal\Core\TypedData\TranslatableInterface;
@@ -116,11 +116,11 @@
   protected $languageManager;
 
   /**
-   * The state service.
+   * The keyvalue collection for tracking installed definitions.
    *
-   * @var \Drupal\Core\State\StateInterface
+   * @var \Drupal\Core\KeyValueStore\KeyValueStoreInterface
    */
-  protected $state;
+  protected $installedDefinitions;
 
   /**
    * Static cache of bundle information.
@@ -181,10 +181,10 @@
    *   The class resolver.
    * @param \Drupal\Core\TypedData\TypedDataManager $typed_data_manager
    *   The typed data manager.
-   * @param \Drupal\Core\State\StateInterface $state
-   *   The state service.
+   * @param \Drupal\Core\KeyValueStore\KeyValueStoreInterface $installed_definitions
+   *   The keyvalue collection for tracking installed definitions.
    */
-  public function __construct(\Traversable $namespaces, ModuleHandlerInterface $module_handler, CacheBackendInterface $cache, LanguageManagerInterface $language_manager, TranslationInterface $translation_manager, ClassResolverInterface $class_resolver, TypedDataManager $typed_data_manager, StateInterface $state) {
+  public function __construct(\Traversable $namespaces, ModuleHandlerInterface $module_handler, CacheBackendInterface $cache, LanguageManagerInterface $language_manager, TranslationInterface $translation_manager, ClassResolverInterface $class_resolver, TypedDataManager $typed_data_manager, KeyValueStoreInterface $installed_definitions) {
     parent::__construct('Entity', $namespaces, $module_handler, 'Drupal\Core\Entity\EntityInterface', 'Drupal\Core\Entity\Annotation\EntityType');
 
     $this->setCacheBackend($cache, 'entity_type', array('entity_types' => TRUE));
@@ -194,7 +194,7 @@
     $this->translationManager = $translation_manager;
     $this->classResolver = $class_resolver;
     $this->typedDataManager = $typed_data_manager;
-    $this->state = $state;
+    $this->installedDefinitions = $installed_definitions;
   }
 
   /**
@@ -1133,7 +1133,7 @@
    * {@inheritdoc}
    */
   public function getLastInstalledDefinition($entity_type_id) {
-    return $this->state->get('entity.manager.' . $entity_type_id . '.entity_type');
+    return $this->installedDefinitions->get($entity_type_id . '.entity_type');
   }
 
   /**
@@ -1144,7 +1144,7 @@
    */
   protected function setLastInstalledDefinition(EntityTypeInterface $entity_type) {
     $entity_type_id = $entity_type->id();
-    $this->state->set('entity.manager.' . $entity_type_id . '.entity_type', $entity_type);
+    $this->installedDefinitions->set($entity_type_id . '.entity_type', $entity_type);
   }
 
   /**
@@ -1154,18 +1154,18 @@
    *   The entity type definition identifier.
    */
   protected function deleteLastInstalledDefinition($entity_type_id) {
-    $this->state->delete('entity.manager.' . $entity_type_id . '.entity_type');
+    $this->installedDefinitions->delete($entity_type_id . '.entity_type');
     // Clean up field storage definitions as well. Even if the entity type
     // isn't currently fieldable, there might be legacy definitions or an
     // empty array stored from when it was.
-    $this->state->delete('entity.manager.' . $entity_type_id . '.field_storage_definitions');
+    $this->installedDefinitions->delete($entity_type_id . '.field_storage_definitions');
   }
 
   /**
    * {@inheritdoc}
    */
   public function getLastInstalledFieldStorageDefinitions($entity_type_id) {
-    return $this->state->get('entity.manager.' . $entity_type_id . '.field_storage_definitions');
+    return $this->installedDefinitions->get($entity_type_id . '.field_storage_definitions');
   }
 
   /**
@@ -1177,7 +1177,7 @@
    *   An array of field storage definitions.
    */
   protected function setLastInstalledFieldStorageDefinitions($entity_type_id, array $storage_definitions) {
-    $this->state->set('entity.manager.' . $entity_type_id . '.field_storage_definitions', $storage_definitions);
+    $this->installedDefinitions->set($entity_type_id . '.field_storage_definitions', $storage_definitions);
   }
 
   /**
diff -u b/core/modules/system/system.module b/core/modules/system/system.module
--- b/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -1055,7 +1055,7 @@
               $storage_definitions = $entity_manager->getFieldStorageDefinitions($entity_type_id);
               // @todo Make it easier to query if there are entities:
               //   https://www.drupal.org/node/2337753.
-              $has_data = $entity_manager->getStorage($entity_type_id)->countFieldData($storage_definitions[$entity_type->getKey('id')], TRUE);
+              $has_data = $entity_type->hasKey('id') && $entity_manager->getStorage($entity_type_id)->countFieldData($storage_definitions[$entity_type->getKey('id')], TRUE);
               if ($has_data) {
                 foreach ($storage_definitions as $storage_definition) {
                   if ($storage_definition->getProvider() == $module_name) {
diff -u b/core/tests/Drupal/Tests/Core/Entity/EntityManagerTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityManagerTest.php
--- b/core/tests/Drupal/Tests/Core/Entity/EntityManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityManagerTest.php
@@ -94,11 +94,11 @@
   protected $typedDataManager;
 
   /**
-   * The state service.
+   * The keyvalue collection for tracking installed definitions.
    *
-   * @var \Drupal\Core\State\StateInterface|\PHPUnit_Framework_MockObject_MockObject
+   * @var \Drupal\Core\KeyValueStore\KeyValueStoreInterface|\PHPUnit_Framework_MockObject_MockObject
    */
-  protected $state;
+  protected $installedDefinitions;
 
   /**
    * {@inheritdoc}
@@ -136,7 +136,7 @@
       ->disableOriginalConstructor()
       ->getMock();
 
-    $this->state = $this->getMock('Drupal\Core\State\StateInterface');
+    $this->installedDefinitions = $this->getMock('Drupal\Core\KeyValueStore\KeyValueStoreInterface');
   }
 
   /**
@@ -167,7 +167,7 @@
       ->method('getDefinitions')
       ->will($this->returnValue($definitions));
 
-    $this->entityManager = new TestEntityManager(new \ArrayObject(), $this->moduleHandler, $this->cache, $this->languageManager, $this->translationManager, $this->getClassResolverStub(), $this->typedDataManager, $this->state);
+    $this->entityManager = new TestEntityManager(new \ArrayObject(), $this->moduleHandler, $this->cache, $this->languageManager, $this->translationManager, $this->getClassResolverStub(), $this->typedDataManager, $this->installedDefinitions);
     $this->entityManager->setContainer($this->container);
     $this->entityManager->setDiscovery($this->discovery);
   }
only in patch2:
unchanged:
--- a/core/profiles/standard/standard.install
+++ b/core/profiles/standard/standard.install
@@ -14,6 +14,12 @@
  * @see system_install()
  */
 function standard_install() {
+  // Now that all modules are installed, make sure the entity storage and other
+  // handlers are up to date with the current entity and field definitions. For
+  // example, Path module adds a base field to nodes and taxonomy terms after
+  // those modules are already installed.
+  \Drupal::service('entity.definition_update_manager')->applyUpdates();
+
   // Set front page to "node".
   \Drupal::config('system.site')->set('page.front', 'node')->save();