diff --git a/apps/files_sharing/ajax/external.php b/apps/files_sharing/ajax/external.php
index 1a709eda07c4ee53a5c34ace0a9c49a787839195..a206cacafa37531b01e39d895b530ab7abf93950 100644
--- a/apps/files_sharing/ajax/external.php
+++ b/apps/files_sharing/ajax/external.php
@@ -34,8 +34,8 @@ $externalManager = new \OCA\Files_Sharing\External\Manager(
 		\OC::$server->getDatabaseConnection(),
 		\OC\Files\Filesystem::getMountManager(),
 		\OC\Files\Filesystem::getLoader(),
-		\OC::$server->getUserSession(),
-		\OC::$server->getHTTPHelper()
+		\OC::$server->getHTTPHelper(),
+		\OC::$server->getUserSession()->getUser()->getUID()
 );
 
 $name = OCP\Files::buildNotExistingFileName('/', $name);
diff --git a/apps/files_sharing/api/server2server.php b/apps/files_sharing/api/server2server.php
index f78d64caa73a3067cc9445e4e60320796382324b..7dce0df7d83cd0143fc5c0cc514e308ee85d8b81 100644
--- a/apps/files_sharing/api/server2server.php
+++ b/apps/files_sharing/api/server2server.php
@@ -60,8 +60,9 @@ class Server2Server {
 					\OC::$server->getDatabaseConnection(),
 					\OC\Files\Filesystem::getMountManager(),
 					\OC\Files\Filesystem::getLoader(),
-					\OC::$server->getUserSession(),
-					\OC::$server->getHTTPHelper());
+					\OC::$server->getHTTPHelper(),
+					$shareWith
+				);
 
 			$name = \OCP\Files::buildNotExistingFileName('/', $name);
 
diff --git a/apps/files_sharing/application.php b/apps/files_sharing/application.php
index 56ec448d6a95e180818fad73681ac915c22bfd4e..3302848106f1f3f5cb71b1706c9cdb40225df143 100644
--- a/apps/files_sharing/application.php
+++ b/apps/files_sharing/application.php
@@ -69,12 +69,14 @@ class Application extends App {
 			return Helper::isIncomingServer2serverShareEnabled();
 		});
 		$container->registerService('ExternalManager', function(SimpleContainer $c) use ($server){
+			$user = $server->getUserSession()->getUser();
+			$uid = $user ? $user->getUID() : null;
 			return new \OCA\Files_Sharing\External\Manager(
 					$server->getDatabaseConnection(),
 					\OC\Files\Filesystem::getMountManager(),
 					\OC\Files\Filesystem::getLoader(),
-					$server->getUserSession(),
-					$server->getHTTPHelper()
+					$server->getHTTPHelper(),
+					$uid
 			);
 		});
 
diff --git a/apps/files_sharing/lib/controllers/sharecontroller.php b/apps/files_sharing/lib/controllers/sharecontroller.php
index 1d8eabc198497b2fd88329321b4cd76ec2f618fc..cd013d4ca96b4a1a59a90ed9e8224b16daaaaac8 100644
--- a/apps/files_sharing/lib/controllers/sharecontroller.php
+++ b/apps/files_sharing/lib/controllers/sharecontroller.php
@@ -142,7 +142,6 @@ class ShareController extends Controller {
 			return new TemplateResponse('core', '404', array(), 'guest');
 		}
 
-		$linkItem = OCP\Share::getShareByToken($token, false);
 		$shareOwner = $linkItem['uid_owner'];
 		$originalSharePath = null;
 		$rootLinkItem = OCP\Share::resolveReShare($linkItem);
diff --git a/apps/files_sharing/lib/external/manager.php b/apps/files_sharing/lib/external/manager.php
index 57dc38a99544f5bf7a6b55bdc1a1c29a43c558af..968edba089af2ce8d01effacef97f48ce86de25f 100644
--- a/apps/files_sharing/lib/external/manager.php
+++ b/apps/files_sharing/lib/external/manager.php
@@ -13,6 +13,11 @@ use OC\Files\Filesystem;
 class Manager {
 	const STORAGE = '\OCA\Files_Sharing\External\Storage';
 
+	/**
+	 * @var string
+	 */
+	private $uid;
+
 	/**
 	 * @var \OCP\IDBConnection
 	 */
@@ -28,11 +33,6 @@ class Manager {
 	 */
 	private $storageLoader;
 
-	/**
-	 * @var \OC\User\Session
-	 */
-	private $userSession;
-
 	/**
 	 * @var \OC\HTTPHelper
 	 */
@@ -41,21 +41,21 @@ class Manager {
 	/**
 	 * @param \OCP\IDBConnection $connection
 	 * @param \OC\Files\Mount\Manager $mountManager
-	 * @param \OC\User\Session $userSession
 	 * @param \OC\Files\Storage\StorageFactory $storageLoader
+	 * @param string $uid
 	 */
 	public function __construct(\OCP\IDBConnection $connection, \OC\Files\Mount\Manager $mountManager,
-								\OC\Files\Storage\StorageFactory $storageLoader, \OC\User\Session $userSession, \OC\HTTPHelper $httpHelper) {
+								\OC\Files\Storage\StorageFactory $storageLoader, \OC\HTTPHelper $httpHelper, $uid) {
 		$this->connection = $connection;
 		$this->mountManager = $mountManager;
-		$this->userSession = $userSession;
 		$this->storageLoader = $storageLoader;
 		$this->httpHelper = $httpHelper;
+		$this->uid = $uid;
 	}
 
 	public function addShare($remote, $token, $password, $name, $owner, $accepted=false, $user = null, $remoteId = -1) {
 
-		$user = $user ? $user: $this->userSession->getUser()->getUID();
+		$user = $user ? $user : $this->uid;
 		$accepted = $accepted ? 1 : 0;
 
 		$mountPoint = Filesystem::normalizePath('/' . $name);
@@ -86,14 +86,13 @@ class Manager {
 			return false;
 		}
 
-		$user = $this->userSession->getUser();
-		if ($user) {
+		if (!is_null($this->uid)) {
 			$query = $this->connection->prepare('
 				SELECT `remote`, `share_token`, `password`, `mountpoint`, `owner`
 				FROM `*PREFIX*share_external`
 				WHERE `user` = ? AND `accepted` = ?
 			');
-			$query->execute(array($user->getUID(), 1));
+			$query->execute(array($this->uid, 1));
 
 			while ($row = $query->fetch()) {
 				$row['manager'] = $this;
@@ -114,7 +113,7 @@ class Manager {
 			SELECT `remote`, `share_token`
 			FROM  `*PREFIX*share_external`
 			WHERE `id` = ? AND `user` = ?');
-		$result = $getShare->execute(array($id,  $this->userSession->getUser()->getUID()));
+		$result = $getShare->execute(array($id, $this->uid));
 
 		return $result ? $getShare->fetch() : false;
 	}
@@ -133,7 +132,7 @@ class Manager {
 				UPDATE `*PREFIX*share_external`
 				SET `accepted` = ?
 				WHERE `id` = ? AND `user` = ?');
-			$acceptShare->execute(array(1, $id,  $this->userSession->getUser()->getUID()));
+			$acceptShare->execute(array(1, $id, $this->uid));
 			$this->sendFeedbackToRemote($share['remote'], $share['share_token'], $id, 'accept');
 		}
 	}
@@ -150,7 +149,7 @@ class Manager {
 		if ($share) {
 			$removeShare = $this->connection->prepare('
 				DELETE FROM `*PREFIX*share_external` WHERE `id` = ? AND `user` = ?');
-			$removeShare->execute(array($id, $this->userSession->getUser()->getUID()));
+			$removeShare->execute(array($id, $this->uid));
 			$this->sendFeedbackToRemote($share['remote'], $share['share_token'], $id, 'decline');
 		}
 	}
@@ -175,19 +174,20 @@ class Manager {
 		return ($result['success'] && $status['ocs']['meta']['statuscode'] === 100);
 	}
 
-	public static function setup() {
+	public static function setup($params) {
 		$externalManager = new \OCA\Files_Sharing\External\Manager(
 				\OC::$server->getDatabaseConnection(),
 				\OC\Files\Filesystem::getMountManager(),
 				\OC\Files\Filesystem::getLoader(),
-				\OC::$server->getUserSession(),
-				\OC::$server->getHTTPHelper()
+				\OC::$server->getHTTPHelper(),
+				$params['user']
 		);
+
 		$externalManager->setupMounts();
 	}
 
 	protected function stripPath($path) {
-		$prefix = '/' . $this->userSession->getUser()->getUID() . '/files';
+		$prefix = '/' . $this->uid . '/files';
 		return rtrim(substr($path, strlen($prefix)), '/');
 	}
 
@@ -196,11 +196,10 @@ class Manager {
 	 * @return Mount
 	 */
 	protected function mountShare($data) {
-		$user = $this->userSession->getUser();
 		$data['manager'] = $this;
-		$mountPoint = '/' . $user->getUID() . '/files' . $data['mountpoint'];
+		$mountPoint = '/' . $this->uid . '/files' . $data['mountpoint'];
 		$data['mountpoint'] = $mountPoint;
-		$data['certificateManager'] = \OC::$server->getCertificateManager($user);
+		$data['certificateManager'] = \OC::$server->getCertificateManager(\OC::$server->getUserSession()->getUser());
 		$mount = new Mount(self::STORAGE, $mountPoint, $data, $this, $this->storageLoader);
 		$this->mountManager->addMount($mount);
 		return $mount;
@@ -219,7 +218,6 @@ class Manager {
 	 * @return bool
 	 */
 	public function setMountPoint($source, $target) {
-		$user = $this->userSession->getUser();
 		$source = $this->stripPath($source);
 		$target = $this->stripPath($target);
 		$sourceHash = md5($source);
@@ -231,13 +229,12 @@ class Manager {
 			WHERE `mountpoint_hash` = ?
 			AND `user` = ?
 		');
-		$result = (bool)$query->execute(array($target, $targetHash, $sourceHash, $user->getUID()));
+		$result = (bool)$query->execute(array($target, $targetHash, $sourceHash, $this->uid));
 
 		return $result;
 	}
 
 	public function removeShare($mountPoint) {
-		$user = $this->userSession->getUser();
 		$mountPoint = $this->stripPath($mountPoint);
 		$hash = md5($mountPoint);
 
@@ -245,7 +242,7 @@ class Manager {
 			SELECT `remote`, `share_token`, `remote_id`
 			FROM  `*PREFIX*share_external`
 			WHERE `mountpoint_hash` = ? AND `user` = ?');
-		$result = $getShare->execute(array($hash, $user->getUID()));
+		$result = $getShare->execute(array($hash, $this->uid));
 
 		if ($result) {
 			$share = $getShare->fetch();
@@ -257,7 +254,7 @@ class Manager {
 			WHERE `mountpoint_hash` = ?
 			AND `user` = ?
 		');
-		return (bool)$query->execute(array($hash, $user->getUID()));
+		return (bool)$query->execute(array($hash, $this->uid));
 	}
 
 	/**
@@ -294,7 +291,7 @@ class Manager {
 	 */
 	public function getOpenShares() {
 		$openShares = $this->connection->prepare('SELECT * FROM `*PREFIX*share_external` WHERE `accepted` = ? AND `user` = ?');
-		$result = $openShares->execute(array(0, $this->userSession->getUser()->getUID()));
+		$result = $openShares->execute(array(0, $this->uid));
 
 		return $result ? $openShares->fetchAll() : array();