diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
index 2825acf..ea0059f 100644
--- a/system/libraries/Cache/drivers/Cache_redis.php
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -117,17 +117,17 @@
 			{
 				log_message('error', 'Cache: Redis connection failed. Check your configuration.');
 			}
+
+			if (isset($config['password']) && ! $this->_redis->auth($config['password']))
+			{
+				log_message('error', 'Cache: Redis authentication failed.');
+			}
 		}
 		catch (RedisException $e)
 		{
 			log_message('error', 'Cache: Redis connection refused ('.$e->getMessage().')');
 		}
 
-		if (isset($config['password']) && ! $this->_redis->auth($config['password']))
-		{
-			log_message('error', 'Cache: Redis authentication failed.');
-		}
-
 		// Initialize the index of serialized values.
 		$serialized = $this->_redis->sMembers('_ci_redis_serialized');
 		empty($serialized) OR $this->_serialized = array_flip($serialized);
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 0400d13..a13f2d2 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -28,6 +28,7 @@
 -  Fixed a bug (#4096) - :doc:`Query Builder <database/query_builder>` didn't apply *dbprefix* when compiling BETWEEN conditions.
 -  Fixed a bug (#4105) - :doc:`Form Validation Library <libraries/form_validation>` didn't allow pipe characters inside "bracket parameters" when using a string ruleset.
 -  Fixed a bug (#4109) - :doc:`Routing <general/routing>` to *default_controller* didn't work when *enable_query_strings* is set to TRUE.
+-  Fixed a bug (#4044) - :doc:`Cache Library <libraries/caching>` 'redis' driver didn't catch ``RedisException`` that could be thrown during authentication.
 
 Version 3.0.1
 =============