diff --git a/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml b/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml
index dd4ab18..787b8d9 100644
--- a/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml
+++ b/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml
@@ -88,7 +88,6 @@
     </UserControl.Resources>
 
     <ScrollViewer x:Name="DialogContentScrollViewer"
-                  Height="570"
                   Padding="0 0 5 0"
                   VerticalScrollBarVisibility="Auto"
                   Focusable="True">
diff --git a/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml.cs b/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml.cs
index d8353a2..06671a6 100644
--- a/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml.cs
+++ b/FasdDesktopUi/Basics/UserControls/Ticket/CloseCaseDialogWithTicket.xaml.cs
@@ -2736,6 +2736,23 @@ namespace FasdDesktopUi.Basics.UserControls
             }
         }
 
+        public void SetDialogContentMaxHeight(double maxHeight)
+        {
+            try
+            {
+                if (DialogContentScrollViewer == null)
+                    return;
+
+                // Keep dialog usable on very small screens, but allow larger monitors to use space.
+                var clamped = Math.Max(220, Math.Min(900, maxHeight));
+                DialogContentScrollViewer.MaxHeight = clamped;
+            }
+            catch (Exception E)
+            {
+                LogException(E);
+            }
+        }
+
         private void DropDownClosed(object sender, EventArgs e)
         {
             if (!(sender is FrameworkElement fe)) return;
diff --git a/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs b/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs
index e9be7c8..abaf444 100644
--- a/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs
+++ b/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs
@@ -3,13 +3,16 @@ using FasdDesktopUi.Basics;
 using FasdDesktopUi.Basics.Models;
 using System;
 using System.ComponentModel;
-using System.Linq;
-using System.Reflection;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Input;
-using static C4IT.Logging.cLogManager;
+using System.Linq;
+using System.Reflection;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Interop;
+using System.Windows.Media;
+using WinForms = System.Windows.Forms;
+using static C4IT.Logging.cLogManager;
 
 namespace FasdDesktopUi.Pages.TicketCompletion
 {
@@ -42,13 +45,25 @@ namespace FasdDesktopUi.Pages.TicketCompletion
             CloseCaseDialogUc.DataProvider = _dataProvider;
         }
 
-        protected override void OnInitialized(EventArgs e)
-        {
-            base.OnInitialized(e);
-
-            cFocusInvoker.GotFocus += ElementGotFocus;
-            cFocusInvoker.LostFocus += ElementLostFocus;
-        }
+        protected override void OnInitialized(EventArgs e)
+        {
+            base.OnInitialized(e);
+
+            cFocusInvoker.GotFocus += ElementGotFocus;
+            cFocusInvoker.LostFocus += ElementLostFocus;
+        }
+
+        protected override void OnSourceInitialized(EventArgs e)
+        {
+            base.OnSourceInitialized(e);
+            UpdateDialogMaxHeightToScreen();
+        }
+
+        protected override void OnLocationChanged(EventArgs e)
+        {
+            base.OnLocationChanged(e);
+            UpdateDialogMaxHeightToScreen();
+        }
 
         #region ClosingBusy
 
@@ -126,6 +141,38 @@ namespace FasdDesktopUi.Pages.TicketCompletion
             }
         }
 
+        private void UpdateDialogMaxHeightToScreen()
+        {
+            try
+            {
+                WinForms.Screen screen = null;
+                IntPtr currentHandle = new WindowInteropHelper(this).Handle;
+
+                if (currentHandle != IntPtr.Zero)
+                {
+                    screen = WinForms.Screen.FromHandle(currentHandle);
+                }
+                else if (Owner != null)
+                {
+                    IntPtr ownerHandle = new WindowInteropHelper(Owner).Handle;
+                    if (ownerHandle != IntPtr.Zero)
+                        screen = WinForms.Screen.FromHandle(ownerHandle);
+                }
+
+                screen = screen ?? WinForms.Screen.PrimaryScreen;
+                var workingArea = screen?.WorkingArea ?? WinForms.Screen.PrimaryScreen.WorkingArea;
+                var dpiScaleY = VisualTreeHelper.GetDpi(this).DpiScaleY;
+                var maxHeightDip = (workingArea.Height / Math.Max(0.1, dpiScaleY)) - 12;
+
+                MaxHeight = Math.Max(220, maxHeightDip);
+                CloseCaseDialogUc?.SetDialogContentMaxHeight(MaxHeight - 180);
+            }
+            catch (Exception ex)
+            {
+                LogException(ex);
+            }
+        }
+
         #region Internal Focus Events
 
         private void ElementGotFocus(object sender, EventArgs e)