diff --git a/apps/files_external/appinfo/application.php b/apps/files_external/appinfo/application.php
index 1bf258c48b..d6552fa680 100644
--- a/apps/files_external/appinfo/application.php
+++ b/apps/files_external/appinfo/application.php
@@ -110,6 +110,7 @@ class Application extends App {
 			$container->query('OCA\Files_External\Lib\Auth\Password\SessionCredentials'),
 			$container->query('OCA\Files_External\Lib\Auth\Password\LoginCredentials'),
 			$container->query('OCA\Files_External\Lib\Auth\Password\UserProvided'),
+			$container->query('OCA\Files_External\Lib\Auth\Password\GlobalAuth'),
 
 			// AuthMechanism::SCHEME_OAUTH1 mechanisms
 			$container->query('OCA\Files_External\Lib\Auth\OAuth1\OAuth1'),
diff --git a/apps/files_external/appinfo/routes.php b/apps/files_external/appinfo/routes.php
index c3149a300c..d5b927c022 100644
--- a/apps/files_external/appinfo/routes.php
+++ b/apps/files_external/appinfo/routes.php
@@ -44,7 +44,12 @@ namespace OCA\Files_External\AppInfo;
 				'url' => '/ajax/public_key.php',
 				'verb' => 'POST',
 				'requirements' => array()
-			)
+			),
+			[
+				'name' => 'Ajax#saveGlobalCredentials',
+				'url' => '/globalcredentials',
+				'verb' => 'POST'
+			]
 		)
 	)
 );
diff --git a/apps/files_external/controller/ajaxcontroller.php b/apps/files_external/controller/ajaxcontroller.php
index cfccacb03e..86c1b657c9 100644
--- a/apps/files_external/controller/ajaxcontroller.php
+++ b/apps/files_external/controller/ajaxcontroller.php
@@ -23,6 +23,7 @@
 
 namespace OCA\Files_External\Controller;
 
+use OCA\Files_External\Lib\Auth\Password\GlobalAuth;
 use OCP\AppFramework\Controller;
 use OCP\IRequest;
 use OCP\AppFramework\Http\JSONResponse;
@@ -31,10 +32,13 @@ use OCA\Files_External\Lib\Auth\PublicKey\RSA;
 class AjaxController extends Controller {
 	/** @var RSA */
 	private $rsaMechanism;
+	/** @var GlobalAuth  */
+	private $globalAuth;
 
-	public function __construct($appName, IRequest $request, RSA $rsaMechanism) {
+	public function __construct($appName, IRequest $request, RSA $rsaMechanism, GlobalAuth $globalAuth) {
 		parent::__construct($appName, $request);
 		$this->rsaMechanism = $rsaMechanism;
+		$this->globalAuth = $globalAuth;
 	}
 
 	private function generateSshKeys() {
@@ -61,4 +65,8 @@ class AjaxController extends Controller {
 		));
 	}
 
+	public function saveGlobalCredentials($uid, $user, $password) {
+		$this->globalAuth->saveAuth($uid, $user, $password);
+		return true;
+	}
 }
diff --git a/apps/files_external/js/settings.js b/apps/files_external/js/settings.js
index 26df203091..0837555f53 100644
--- a/apps/files_external/js/settings.js
+++ b/apps/files_external/js/settings.js
@@ -1338,6 +1338,33 @@ $(document).ready(function() {
 		}
 	});
 
+	$('#global_credentials').on('submit', function() {
+		var $form = $(this);
+		var uid = $form.find('[name=uid]').val();
+		var user = $form.find('[name=username]').val();
+		var password = $form.find('[name=password]').val();
+		var $submit = $form.find('[type=submit]');
+		$submit.val(t('files_external', 'Saving...'));
+		$.ajax({
+			type: 'POST',
+			contentType: 'application/json',
+			data: JSON.stringify({
+				uid: uid,
+				user: user,
+				password: password
+			}),
+			url: OC.generateUrl('apps/files_external/globalcredentials'),
+			dataType: 'json',
+			success: function() {
+				$submit.val(t('files_external', 'Saved'));
+				setTimeout(function(){
+					$submit.val(t('files_external', 'Save'));
+				}, 2500);
+			}
+		});
+		return false;
+	});
+
 	// global instance
 	OCA.External.Settings.mountConfig = mountConfigListView;
 
diff --git a/apps/files_external/lib/auth/password/globalauth.php b/apps/files_external/lib/auth/password/globalauth.php
new file mode 100644
index 0000000000..dcfea65b55
--- /dev/null
+++ b/apps/files_external/lib/auth/password/globalauth.php
@@ -0,0 +1,85 @@
+<?php
+/**
+ * @author Robin Appelman <icewind@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib\Auth\Password;
+
+use OCA\Files_External\Lib\Auth\IUserProvided;
+use OCA\Files_External\Lib\DefinitionParameter;
+use OCA\Files_External\Service\BackendService;
+use OCP\IL10N;
+use OCP\IUser;
+use OCA\Files_External\Lib\Auth\AuthMechanism;
+use OCA\Files_External\Lib\StorageConfig;
+use OCP\Security\ICredentialsManager;
+use OCP\Files\Storage;
+use OCA\Files_External\Lib\InsufficientDataForMeaningfulAnswerException;
+
+/**
+ * Global Username and Password
+ */
+class GlobalAuth extends AuthMechanism {
+
+	const CREDENTIALS_IDENTIFIER = 'password::global';
+
+	/** @var ICredentialsManager */
+	protected $credentialsManager;
+
+	public function __construct(IL10N $l, ICredentialsManager $credentialsManager) {
+		$this->credentialsManager = $credentialsManager;
+
+		$this
+			->setIdentifier('password::global')
+			->setVisibility(BackendService::VISIBILITY_DEFAULT)
+			->setScheme(self::SCHEME_PASSWORD)
+			->setText($l->t('Global Credentails'));
+	}
+
+	public function getAuth($uid) {
+		$auth = $this->credentialsManager->retrieve($uid, self::CREDENTIALS_IDENTIFIER);
+		if (!is_array($auth)) {
+			return [];
+		} else {
+			return $auth;
+		}
+	}
+
+	public function saveAuth($uid, $user, $password) {
+		$this->credentialsManager->store($uid, self::CREDENTIALS_IDENTIFIER, [
+			'user' => $user,
+			'password' => $password
+		]);
+	}
+
+	public function manipulateStorageConfig(StorageConfig &$storage, IUser $user = null) {
+		if ($storage->getType() === StorageConfig::MOUNT_TYPE_ADMIN) {
+			$uid = '';
+		} else {
+			$uid = $user->getUID();
+		}
+		$credentials = $this->credentialsManager->retrieve($uid, self::CREDENTIALS_IDENTIFIER);
+
+		if (is_array($credentials)) {
+			$storage->setBackendOption('user', $credentials['user']);
+			$storage->setBackendOption('password', $credentials['password']);
+		}
+	}
+
+}
diff --git a/apps/files_external/lib/failedcache.php b/apps/files_external/lib/failedcache.php
index 9e24c12f4b..f9866f4305 100644
--- a/apps/files_external/lib/failedcache.php
+++ b/apps/files_external/lib/failedcache.php
@@ -60,6 +60,10 @@ class FailedCache implements ICache {
 		return;
 	}
 
+	public function insert($file, array $data) {
+		return;
+	}
+
 	public function update($id, array $data) {
 		return;
 	}
diff --git a/apps/files_external/personal.php b/apps/files_external/personal.php
index 4d8f480ecc..f180b7e8f5 100644
--- a/apps/files_external/personal.php
+++ b/apps/files_external/personal.php
@@ -30,6 +30,7 @@ use \OCA\Files_External\Service\BackendService;
 $appContainer = \OC_Mount_Config::$app->getContainer();
 $backendService = $appContainer->query('OCA\Files_External\Service\BackendService');
 $userStoragesService = $appContainer->query('OCA\Files_external\Service\UserStoragesService');
+$globalAuth = $appContainer->query('OCA\Files_External\Lib\Auth\Password\GlobalAuth');
 
 $tmpl = new OCP\Template('files_external', 'settings');
 $tmpl->assign('encryptionEnabled', \OC::$server->getEncryptionManager()->isEnabled());
@@ -38,4 +39,7 @@ $tmpl->assign('storages', $userStoragesService->getStorages());
 $tmpl->assign('dependencies', OC_Mount_Config::dependencyMessage($backendService->getBackends()));
 $tmpl->assign('backends', $backendService->getAvailableBackends());
 $tmpl->assign('authMechanisms', $backendService->getAuthMechanisms());
+$uid = \OC::$server->getUserSession()->getUser()->getUID();
+$tmpl->assign('globalCredentials', $globalAuth->getAuth($uid));
+$tmpl->assign('globalCredentialsUid', $uid);
 return $tmpl->fetchPage();
diff --git a/apps/files_external/settings.php b/apps/files_external/settings.php
index 0d83d26ff9..a5265c500d 100644
--- a/apps/files_external/settings.php
+++ b/apps/files_external/settings.php
@@ -32,6 +32,7 @@ use \OCA\Files_External\Service\BackendService;
 $appContainer = \OC_Mount_Config::$app->getContainer();
 $backendService = $appContainer->query('OCA\Files_External\Service\BackendService');
 $globalStoragesService = $appContainer->query('OCA\Files_external\Service\GlobalStoragesService');
+$globalAuth = $appContainer->query('OCA\Files_External\Lib\Auth\Password\GlobalAuth');
 
 \OC_Util::addVendorScript('select2/select2');
 \OC_Util::addVendorStyle('select2/select2');
@@ -44,4 +45,7 @@ $tmpl->assign('backends', $backendService->getAvailableBackends());
 $tmpl->assign('authMechanisms', $backendService->getAuthMechanisms());
 $tmpl->assign('dependencies', OC_Mount_Config::dependencyMessage($backendService->getBackends()));
 $tmpl->assign('allowUserMounting', $backendService->isUserMountingAllowed());
+$tmpl->assign('allowUserMounting', $backendService->isUserMountingAllowed());
+$tmpl->assign('globalCredentials', $globalAuth->getAuth(''));
+$tmpl->assign('globalCredentialsUid', '');
 return $tmpl->fetchPage();
diff --git a/apps/files_external/templates/settings.php b/apps/files_external/templates/settings.php
index f7caf3d2ca..8b453fe77c 100644
--- a/apps/files_external/templates/settings.php
+++ b/apps/files_external/templates/settings.php
@@ -68,8 +68,23 @@
 		}
 	}
 ?>
-<form id="files_external" class="section" data-encryption-enabled="<?php echo $_['encryptionEnabled']?'true': 'false'; ?>">
+<form autocomplete="false" class="section" action="#"
+	  id="global_credentials">
 	<h2><?php p($l->t('External Storage')); ?></h2>
+	<p><?php p($l->t('Global Credentials')); ?></p>
+	<input type="text" name="username"
+		   autocomplete="false"
+		   value="<?php p($_['globalCredentials']['user']); ?>"
+		   placeholder="<?php p($l->t('Username')) ?>"/>
+	<input type="password" name="password"
+		   autocomplete="false"
+		   value="<?php p($_['globalCredentials']['password']); ?>"
+		   placeholder="<?php p($l->t('Password')) ?>"/>
+	<input type="hidden" name="uid"
+		   value="<?php p($_['globalCredentialsUid']); ?>"/>
+	<input type="submit" value="<?php p($l->t('Save')) ?>"/>
+</form>
+<form id="files_external" class="section" data-encryption-enabled="<?php echo $_['encryptionEnabled']?'true': 'false'; ?>">
 	<?php if (isset($_['dependencies']) and ($_['dependencies']<>'')) print_unescaped(''.$_['dependencies'].''); ?>
 	<table id="externalStorage" class="grid" data-admin='<?php print_unescaped(json_encode($_['visibilityType'] === BackendService::VISIBILITY_ADMIN)); ?>'>
 		<thead>