diff --git a/Window/Properties/Resources.Designer.cs b/Window/Properties/Resources.Designer.cs
index 46192f1..bf1dbb4 100644
--- a/Window/Properties/Resources.Designer.cs
+++ b/Window/Properties/Resources.Designer.cs
@@ -242,6 +242,24 @@ namespace SystemTemperatureStatusWindow.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Service not installed - please restart application.
+        /// </summary>
+        public static string ServiceNotInstalled {
+            get {
+                return ResourceManager.GetString("ServiceNotInstalled", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Waiting for service to start....
+        /// </summary>
+        public static string ServiceNotStarted {
+            get {
+                return ResourceManager.GetString("ServiceNotStarted", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to _Start when Windows starts.
         /// </summary>
diff --git a/Window/Properties/Resources.resx b/Window/Properties/Resources.resx
index f030313..a74c0df 100644
--- a/Window/Properties/Resources.resx
+++ b/Window/Properties/Resources.resx
@@ -190,4 +190,10 @@
   <data name="OptionsWindow_Title" xml:space="preserve">
     <value>Options</value>
   </data>
+  <data name="ServiceNotInstalled" xml:space="preserve">
+    <value>Service not installed - please restart application</value>
+  </data>
+  <data name="ServiceNotStarted" xml:space="preserve">
+    <value>Waiting for service to start...</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/Window/WindowSource.cs b/Window/WindowSource.cs
index e19bb1c..d6d6515 100644
--- a/Window/WindowSource.cs
+++ b/Window/WindowSource.cs
@@ -1,4 +1,5 @@
-using FloatingStatusWindowLibrary;
+using Common.Wpf.Windows;
+using FloatingStatusWindowLibrary;
 using Microsoft.Win32.TaskScheduler;
 using System;
 using System.Collections.Generic;
@@ -12,8 +13,6 @@ using System.Windows.Threading;
 using SystemTemperatureStatusWindow.Options;
 using SystemTemperatureStatusWindow.Properties;
 using SystemTemperatureStatusWindow.SystemTemperatureService;
-using Common.Wpf.Windows;
-using Task = Microsoft.Win32.TaskScheduler.Task;
 
 namespace SystemTemperatureStatusWindow
 {
@@ -63,7 +62,6 @@ namespace SystemTemperatureStatusWindow
             _refreshTimer = new Timer(Settings.Default.UpdateInterval) { AutoReset = false };
             _refreshTimer.Elapsed += HandleTimerElapsed;
 
-
             System.Threading.Tasks.Task.Factory.StartNew(UpdateApp).ContinueWith(task => StartUpdate(task.Result.Result));
         }
 
@@ -97,6 +95,23 @@ namespace SystemTemperatureStatusWindow
         {
             try
             {
+                using (var taskService = new TaskService())
+                {
+                    var existingTask = taskService.FindTask(ScheduledTaskName);
+
+                    if (existingTask == null)
+                    {
+                        UpdateText(Resources.ServiceNotInstalled);
+                        return;
+                    }
+
+                    if (existingTask.State != TaskState.Running)
+                    {
+                        UpdateText(Resources.ServiceNotStarted);
+                        return;
+                    }
+                }
+
                 using (var client = new SystemTemperatureServiceClient())
                 {
                     var builder = new StringBuilder();