diff --git a/src/Illuminate/Database/Connectors/SqlServerConnector.php b/src/Illuminate/Database/Connectors/SqlServerConnector.php
index caefa684693f..c9fbbe733107 100755
--- a/src/Illuminate/Database/Connectors/SqlServerConnector.php
+++ b/src/Illuminate/Database/Connectors/SqlServerConnector.php
@@ -160,6 +160,10 @@ protected function getSqlSrvDsn(array $config)
             $arguments['LoginTimeout'] = $config['login_timeout'];
         }
 
+        if (isset($config['authentication'])) {
+            $arguments['Authentication'] = $config['authentication'];
+        }
+
         return $this->buildConnectString('sqlsrv', $arguments);
     }