diff --git a/fet2020/authentications/authentications.py b/fet2020/authentications/authentications.py
index e8dd687f..96084b5b 100644
--- a/fet2020/authentications/authentications.py
+++ b/fet2020/authentications/authentications.py
@@ -14,11 +14,16 @@ def authentication(username, password):
     if password is None or password.strip() == "":
         return None
 
-    server = Server(host, port=port, use_ssl=True)
+    server = Server(host, port=port)
     userdn = f"uid={username},ou=user,dc=fet,dc=htu,dc=tuwien,dc=ac,dc=at"
 
     try:
-        c = Connection(server, user=userdn, password=password, auto_bind=True)
+        c = Connection(server, user=userdn, password=password)
+
+        # perform the Bind operation
+        if not c.bind():
+            print('error in bind', c.result)
+
         if c.extend.standard.who_am_i():
             return username