diff --git a/ChatController/HauptKlassen/Login.cs b/ChatController/HauptKlassen/Login.cs
index 464bad2..b39acf9 100644
--- a/ChatController/HauptKlassen/Login.cs
+++ b/ChatController/HauptKlassen/Login.cs
@@ -103,7 +103,7 @@ namespace ChatController.HauptKlassen
                 try
                 {
                     var serverURl = _NewUrl + _Tenant;
-
+                    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
                     var request = WebRequest.Create(serverURl);
 
                     request.Credentials = CredentialCache.DefaultCredentials;