diff --git a/core/lib/Drupal/Core/Config/PreExistingConfigException.php b/core/lib/Drupal/Core/Config/PreExistingConfigException.php
index d34a7ad..84a85fb 100644
--- a/core/lib/Drupal/Core/Config/PreExistingConfigException.php
+++ b/core/lib/Drupal/Core/Config/PreExistingConfigException.php
@@ -7,8 +7,67 @@
 
 namespace Drupal\Core\Config;
 
+use Drupal\Component\Utility\String;
+
 /**
  * An exception thrown if configuration with the same name already exists.
  */
 class PreExistingConfigException extends ConfigException {
+
+  /**
+   * A list of configuration objects that already exist in active configuration.
+   *
+   * @var array
+   */
+  protected $configObjects = [];
+
+  /**
+   * The name of the module that is being installed.
+   *
+   * @var string
+   */
+  protected $module;
+
+  /**
+   * Gets the list of configuration objects that already exist.
+   *
+   * @return array
+   *   A list of configuration objects that already exist in active
+   *   configuration.
+   */
+  public function getConfigObjects() {
+    return $this->configObjects;
+  }
+
+  /**
+   * Gets the name of the module that is being installed.
+   *
+   * @return string
+   *   The name of the module that is being installed.
+   */
+  public function getModule() {
+    return $this->module;
+  }
+
+  /**
+   * Creates an exception for a module name and a list of configuration objects.
+   *
+   * @param $module
+   *   The name of the module that is being installed.
+   * @param array $config_objects
+   *   A list of configuration objects that already exist in active
+   *   configuration.
+   *
+   * @return \Drupal\Core\Config\PreExistingConfigException
+   */
+  public static function create($module, array $config_objects) {
+    $message = String::format('Configuration objects (@config_names) provided by @extension already exist in active configuration',
+      array('@config_names' => implode(', ', $config_objects), '@extension' => $module)
+    );
+    $e = new static($message);
+    $e->configObjects = $config_objects;
+    $e->module = $module;
+    return $e;
+  }
+
 }
diff --git a/core/lib/Drupal/Core/Extension/ModuleInstaller.php b/core/lib/Drupal/Core/Extension/ModuleInstaller.php
index a84bad8..a3b8345 100644
--- a/core/lib/Drupal/Core/Extension/ModuleInstaller.php
+++ b/core/lib/Drupal/Core/Extension/ModuleInstaller.php
@@ -159,9 +159,7 @@ public function install(array $module_list, $enable_dependencies = TRUE) {
           // may depend on this one.
           $existing_configuration = $config_installer->findPreExistingConfiguration('module', $module);
           if (!empty($existing_configuration)) {
-            throw new PreExistingConfigException(String::format('Configuration @config_names provided by @extension already exist in active configuration',
-              array('@config_names' => implode(',', $existing_configuration[StorageInterface::DEFAULT_COLLECTION]), '@extension' => $module)
-            ));
+            throw PreExistingConfigException::create($module, $existing_configuration[StorageInterface::DEFAULT_COLLECTION]);
           }
         }
 
diff --git a/core/modules/config/src/Tests/ConfigInstallWebTest.php b/core/modules/config/src/Tests/ConfigInstallWebTest.php
index 5639a1b..cc3cd66 100644
--- a/core/modules/config/src/Tests/ConfigInstallWebTest.php
+++ b/core/modules/config/src/Tests/ConfigInstallWebTest.php
@@ -25,7 +25,6 @@ class ConfigInstallWebTest extends WebTestBase {
    */
   protected $adminUser;
 
-
   /**
    * {@inheritdoc}
    */
@@ -96,7 +95,7 @@ function testIntegrationModuleReinstallation() {
       $this->fail('Expected PreExistingConfigException not thrown.');
     }
     catch (PreExistingConfigException $e) {
-      $this->assertEqual($e->getMessage(), 'Configuration config_test.dynamic.config_integration_test provided by config_integration_test already exist in active configuration');
+      $this->assertEqual($e->getMessage(), 'Configuration objects (config_test.dynamic.config_integration_test) provided by config_integration_test already exist in active configuration');
     }
 
     // Delete the configuration entity so that the install will work.
@@ -109,7 +108,7 @@ function testIntegrationModuleReinstallation() {
     $config_static = $this->config($default_config);
     $this->assertIdentical($config_static->isNew(), FALSE);
     $this->assertIdentical($config_static->get('foo'), 'default setting');
-    
+
     // Verify the integration config is using the default.
     $config_entity = \Drupal::config($default_configuration_entity);
     $this->assertIdentical($config_entity->isNew(), FALSE);
@@ -175,19 +174,46 @@ function testInstallProfileConfigOverwrite() {
   public function testPreExistingConfigInstall() {
     $this->drupalLogin($this->adminUser);
 
-    // Try to install config_install_fail_test without config_test enabled.
+    // Try to install config_install_fail_test and config_test. This installs
+    // the config_test module first because it is a dependency and then detects
+    // a config clash.
+    // @see \Drupal\system\Form\ModulesListForm::submitForm()
+    $this->drupalPostForm('admin/modules', array('modules[Testing][config_test][enable]' => TRUE, 'modules[Testing][config_install_fail_test][enable]' => TRUE), t('Save configuration'));
+    $this->assertRaw(t('The default configuration %config_names provided by @extension already exists in active configuration.',
+      array('%config_names' => implode(', ', ['config_test.dynamic.dotted.default']), '@extension' => 'Configuration install fail test')));
+
+    // Uninstall the config_test module to test the confirm form.
+    $this->drupalPostForm('admin/modules/uninstall', array('uninstall[config_test]' => TRUE), t('Uninstall'));
+    $this->drupalPostForm(NULL, array(), t('Uninstall'));
+
+    // Try to install config_install_fail_test without config_test enabled. This
+    // installs the config_test module because it is a dependency and then
+    // detects a config clash. Unlike the first module install this uses the
+    // confirm form.
+    // @see \Drupal\system\Form\ModulesListConfirmForm::submitForm()
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_install_fail_test][enable]' => TRUE), t('Save configuration'));
     $this->drupalPostForm(NULL, array(), t('Continue'));
-    // This can only work if config_install_fail_test depends on config_test
-    $this->assertText('Configuration config_test.dynamic.dotted.default provided by config_install_fail_test already exist in active configuration');
+    $this->assertRaw(t('The default configuration %config_names provided by @extension already exists in active configuration.',
+      array('%config_names' => implode(', ', ['config_test.dynamic.dotted.default']), '@extension' => 'Configuration install fail test')));
+
+    // Update the container so we get an environment with config_test installed.
+    $this->rebuildContainer();
+    $config_entity = \Drupal::entityManager()->getStorage('config_test')->load('dotted.default');
 
-    // Try to install config_install_fail_test. config_test was enabled in the
-    // previous submission.
+    // Try to install config_install_fail_test. Now we are able to detect a
+    // configuration clash before installation so the user will be taken to...
+    // The config_test module was enabled in the previous submission.
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_install_fail_test][enable]' => TRUE), t('Save configuration'));
+    $this->assertUrl('admin/modules/config-clash');
     $this->assertText('You must delete or rename the following configuration to install Configuration install fail test.');
+    $this->assertLinkByHref($config_entity->url());
 
-    // Try to install config_install_fail_dependency_test.
+    // Try to install config_install_fail_dependency_test. This fails because
+    // it depends on config_install_fail_test and we can detect the
+    // configuration clash before beginning the installation.
     $this->drupalPostForm('admin/modules', array('modules[Testing][config_install_fail_dependency_test][enable]' => TRUE), t('Save configuration'));
+    $this->assertUrl('admin/modules/config-clash');
     $this->assertText('You must delete or rename the following configuration to install Configuration install fail dependency test, Configuration install fail test.');
+    $this->assertLinkByHref($config_entity->url());
   }
 }
diff --git a/core/modules/system/src/Form/ModulesListConfirmForm.php b/core/modules/system/src/Form/ModulesListConfirmForm.php
index 93c64f9..d7234f4 100644
--- a/core/modules/system/src/Form/ModulesListConfirmForm.php
+++ b/core/modules/system/src/Form/ModulesListConfirmForm.php
@@ -183,7 +183,18 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
       // the form doesn't allow modules with unmet dependencies, so the only way
       // this can happen is if the filesystem changed between form display and
       // submit, in which case the user has bigger problems.
-      $this->moduleInstaller->install(array_keys($this->modules['install']));
+      try {
+        $this->moduleInstaller->install(array_keys($this->modules['install']));
+      }
+      catch (PreExistingConfigException $e) {
+        $config_objects = $e->getConfigObjects();
+        drupal_set_message($this->formatPlural(
+          count($config_objects),
+          'The default configuration %config_names provided by @extension already exists in active configuration.',
+          'The default configurations %config_names provided by @extension already exist in active configuration.',
+          array('%config_names' => implode(', ', $config_objects), '@extension' => $this->modules['install'][$e->getModule()])
+        ));
+      }
     }
 
     // Gets module list after install process, flushes caches and displays a
diff --git a/core/modules/system/src/Form/ModulesListForm.php b/core/modules/system/src/Form/ModulesListForm.php
index 9ee1f2b..8347543 100644
--- a/core/modules/system/src/Form/ModulesListForm.php
+++ b/core/modules/system/src/Form/ModulesListForm.php
@@ -546,8 +546,14 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
       try {
         $this->moduleInstaller->install(array_keys($modules['install']));
       }
-      catch (PreExistingConfigException $exception) {
-        drupal_set_message($exception->getMessage());
+      catch (PreExistingConfigException $e) {
+        $config_objects = $e->getConfigObjects();
+        drupal_set_message($this->formatPlural(
+          count($config_objects),
+          'The default configuration %config_names provided by @extension already exists in active configuration.',
+          'The default configurations %config_names provided by @extension already exist in active configuration.',
+          array('%config_names' => implode(', ', $config_objects), '@extension' => $modules['install'][$e->getModule()])
+        ));
       }
     }