diff --git a/konova/sub_settings/django_settings.py b/konova/sub_settings/django_settings.py
index 3cd9dc98..72bfbd96 100644
--- a/konova/sub_settings/django_settings.py
+++ b/konova/sub_settings/django_settings.py
@@ -66,7 +66,6 @@ INSTALLED_APPS = [
     'django.contrib.staticfiles',
     'django.contrib.gis',
     'django.contrib.humanize',
-    'simple_sso.sso_server',
     'django_tables2',
     'bootstrap_modal_forms',
     'fontawesome_5',
diff --git a/konova/utils/messenger.py b/konova/utils/messenger.py
deleted file mode 100644
index 5be4dc1e..00000000
--- a/konova/utils/messenger.py
+++ /dev/null
@@ -1,78 +0,0 @@
-"""
-Author: Michel Peltriaux
-Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
-Contact: michel.peltriaux@sgdnord.rlp.de
-Created on: 17.08.21
-
-"""
-from collections import Iterable
-
-import requests
-from user.models import User
-from django.utils.translation import gettext_lazy as _
-
-from konova.settings import SSO_SERVER_BASE, SSO_PUBLIC_KEY, PROXIES
-from konova.sub_settings.context_settings import BASE_TITLE_SHORT
-
-
-class Messenger:
-    """ Used to send messages to the SSO server.
-
-    Messages can be seen by the user the next time they login on their SSO dashboard.
-    Documentation for SSO Server-Client communication can be found here:
-    https://git.naturschutz.rlp.de/SGD-Nord/arnova/wiki/Messages
-
-    """
-    server_url = "{}communication/message/".format(SSO_SERVER_BASE)
-
-    def __init__(self, users: Iterable, subject: str = None, body: str = None, type: str = None):
-        self.users = users
-        self.msg_subject = subject
-        self.msg_body = body
-        self.msg_type = type
-
-    def send(self):
-        """ Sends a message
-
-        """
-        if self.msg_body is None or len(self.msg_body) == 0:
-            raise AttributeError("No message body set")
-
-        headers = {
-            "x-services-public-key": SSO_PUBLIC_KEY
-        }
-        for user in self.users:
-            data = {
-                "type": self.msg_type,
-                "sender": BASE_TITLE_SHORT,
-                "receiver": user.username,
-                "subject": self.msg_subject,
-                "body": self.msg_body,
-            }
-            requests.post(
-                self.server_url,
-                data=data,
-                headers=headers,
-                proxies=PROXIES
-            )
-
-    def send_object_checked(self, obj_identifier: str, performing_user: User, detail_view_url: str = ""):
-        """ Wraps sending of a message related to the checking of an object, like an intervention
-
-        Args:
-            obj_identifier (str): The object's identifier (e.g. 'EIV-123'
-            performing_user (User): The user who performed the checking
-            detail_view_url (str): If a direct link to the object shall be added to the message, it can be provided here
-
-        Returns:
-
-        """
-        self.msg_subject = _("{} checked").format(obj_identifier)
-        if len(detail_view_url) > 0:
-            detail_view_url = _('<a href="{}">Check it out</a>').format(detail_view_url)
-        self.msg_body = _("{} has been checked successfully by user {}! {}").format(
-            obj_identifier,
-            performing_user.username,
-            detail_view_url
-        )
-        self.send()
diff --git a/requirements.txt b/requirements.txt
index 0e0c559b..2f00fdd2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,13 +24,11 @@ django-environ==0.11.2
 django-filter==24.3
 django-fontawesome-5==1.0.18
 django-oauth-toolkit==3.0.1
-django-simple-sso==1.2.0
 django-tables2==2.7.1
 et_xmlfile==2.0.0
 gunicorn==23.0.0
 idna==3.10
 importlib_metadata==8.5.0
-itsdangerous==0.24
 jwcrypto==1.5.6
 kombu==5.4.0rc1
 oauthlib==3.2.2