diff --git a/README.md b/README.md
index 1a11c3c..249ece7 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ devices.
 ## Version History
 
 ```txt
+2.6.5 Try again after 4xx error
 2.6.4 Handle "SYS_00004" response again (was removed in 2.6.3)
 2.6.3 Differentiate response errors
 2.6.2 Fix request wrapper
diff --git a/setup.py b/setup.py
index 9799430..67dfe29 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 setup(
     name='vsure',
-    version='2.6.4',
+    version='2.6.5',
     description='Read and change status of verisure devices through mypages.',
     long_description='A python3 module for reading and changing status of '
     + 'verisure devices through mypages.',
diff --git a/verisure/session.py b/verisure/session.py
index 91d19a8..3fab4db 100644
--- a/verisure/session.py
+++ b/verisure/session.py
@@ -3,11 +3,14 @@
 '''
 
 import json
+import logging
 import os
 import pickle
 
 import requests
 
+_LOGGER = logging.getLogger(__name__)
+
 
 class Error(Exception):
     ''' Verisure session error '''
@@ -19,6 +22,9 @@ class RequestError(Error):
 
 class LoginError(Error):
     ''' Login failed '''
+    def __init__(self, text, status_code = None):
+        super().__init__(
+            f'Login error, status code: {status_code} - Data: {text}')
 
 
 class LogoutError(Error):
@@ -102,20 +108,32 @@ def wrapper(url, *args, **kwargs):
                 try:
                     response = function(base_url+url, *args, **kwargs)
                     if response.status_code >= 500:
+                        _LOGGER.warning(f'Error from {base_url}: {response.status_code} - {response.text}')
                         last_exception = ResponseError(response.status_code, response.text)
                         self._base_urls.reverse()
                         continue
                     if response.status_code >= 400:
-                        last_exception = LoginError(response.text)
-                        break
+                        _LOGGER.warning(f'Error from {base_url}: {response.status_code} - {response.text}')
+                        if "Session has expired" in response.text:
+                            raise LoginError(response.text, response.status_code)
+                        elif "Username/password does not match any valid login" in response.text:
+                            raise ResponseError(response.status_code, response.text)
+
+                        last_exception = LoginError(response.text, response.status_code)
+                        self._base_urls.reverse()
+                        continue
                     if response.status_code == 200:
+                        _LOGGER.debug(f'OK from {base_url}: {response.status_code}')
                         if "SYS_00004" in response.text:
                             self._base_urls.reverse()
                             continue
                         return response
+                    _LOGGER.debug(f'Unknown status from {base_url}: {response.status_code} - {response.text}')
  
                 except requests.exceptions.RequestException as ex:
+                    _LOGGER.debug(f'Exception from {base_url}: {ex}')
                     last_exception = RequestError(str(ex))
+                _LOGGER.debug(f'Switching active base_url')
                 self._base_urls.reverse()
             raise last_exception
         return wrapper