diff --git a/mslib/msui/mscolab.py b/mslib/msui/mscolab.py
index e63f4ce8d..13c227524 100644
--- a/mslib/msui/mscolab.py
+++ b/mslib/msui/mscolab.py
@@ -934,6 +934,7 @@ def get_recent_op_id(self):
                 return op_id
             else:
                 show_popup(self.ui, "Error", "Session expired, new login required")
+                self.signal_logout_mscolab()
         else:
             show_popup(self.ui, "Error", "Your Connection is expired. New Login required!")
             self.logout()
@@ -1510,8 +1511,12 @@ def show_categories_to_ui(self):
             data = {
                 "token": self.token
             }
-            r = requests.get(f'{self.mscolab_server_url}/operations', data=data, timeout=(2, 10))
-            if r.text != "False":
+            r = None
+            try:
+                r = requests.get(f'{self.mscolab_server_url}/operations', data=data, timeout=(2, 10))
+            except requests.exceptions.MissingSchema:
+                show_popup(self.ui, "Error", "Session expired, new login required")
+            if r is not None and r.text != "False":
                 _json = json.loads(r.text)
                 operations = _json["operations"]
                 self.ui.filterCategoryCb.clear()
diff --git a/mslib/msui/mscolab_admin_window.py b/mslib/msui/mscolab_admin_window.py
index ee55d0a5f..1d23c5bba 100644
--- a/mslib/msui/mscolab_admin_window.py
+++ b/mslib/msui/mscolab_admin_window.py
@@ -180,7 +180,7 @@ def set_label_text(self):
         if r.text != "False":
             _json = json.loads(r.text)
             creator_name = _json["username"]
-        self.operationNameLabel.setText(f"Operation: {self.operation_name} by User: {creator_name}")
+            self.operationNameLabel.setText(f"Operation: {self.operation_name} by User: {creator_name}")
         self.usernameLabel.setText(f"Logged In: {self.user['username']}")
 
     def load_import_operations(self):
diff --git a/mslib/msui/msui.py b/mslib/msui/msui.py
index adb93614f..33d5c23b4 100644
--- a/mslib/msui/msui.py
+++ b/mslib/msui/msui.py
@@ -58,7 +58,7 @@
 from mslib.utils import setup_logging
 from mslib.plugins.io.csv import load_from_csv, save_to_csv
 from mslib.msui.icons import icons, python_powered
-from mslib.utils.qt import get_open_filenames, get_save_filename, Worker, Updater
+from mslib.utils.qt import get_open_filenames, get_save_filename, show_popup, Worker, Updater
 from mslib.utils.config import read_config_file, config_loader
 from mslib.utils.auth import get_auth_from_url_and_name
 from PyQt5 import QtGui, QtCore, QtWidgets, QtTest
@@ -881,8 +881,12 @@ def create_view_handler(self, _type):
         if self.local_active:
             self.create_view(_type, self.active_flight_track)
         else:
-            self.mscolab.waypoints_model.name = self.mscolab.active_operation_name
-            self.create_view(_type, self.mscolab.waypoints_model)
+            try:
+                self.mscolab.waypoints_model.name = self.mscolab.active_operation_name
+                self.create_view(_type, self.mscolab.waypoints_model)
+            except AttributeError:
+                # can happen, when the servers secret was changed
+                show_popup(self.mscolab.ui, "Error", "Session expired, new login required")
 
     def create_view(self, _type, model):
         """Method called when the user selects a new view to be opened. Creates