diff --git a/Bloxstrap/App.xaml.cs b/Bloxstrap/App.xaml.cs
index ce40e07..f5bcefb 100644
--- a/Bloxstrap/App.xaml.cs
+++ b/Bloxstrap/App.xaml.cs
@@ -1,6 +1,7 @@
 using System.Reflection;
 using System.Security.Cryptography;
 using System.Windows;
+using System.Windows.Shell;
 using System.Windows.Threading;
 
 using Microsoft.Win32;
@@ -35,6 +36,8 @@ namespace Bloxstrap
 
         public static string Version = Assembly.GetExecutingAssembly().GetName().Version!.ToString()[..^2];
 
+        public static Bootstrapper? Bootstrapper { get; set; } = null!;
+
         public static bool IsActionBuild => !String.IsNullOrEmpty(BuildMetadata.CommitRef);
 
         public static bool IsProductionBuild => IsActionBuild && BuildMetadata.CommitRef.StartsWith("tag", StringComparison.Ordinal);
@@ -104,6 +107,14 @@ namespace Bloxstrap
 
             _showingExceptionDialog = true;
 
+            if (Bootstrapper?.Dialog != null)
+            {
+                if (Bootstrapper.Dialog.TaskbarProgressValue == 0)
+                    Bootstrapper.Dialog.TaskbarProgressValue = 1; // make sure it's visible
+
+                Bootstrapper.Dialog.TaskbarProgressState = TaskbarItemProgressState.Error;
+            }
+
             Frontend.ShowExceptionDialog(ex);
 
             Terminate(ErrorCode.ERROR_INSTALL_FAILURE);
diff --git a/Bloxstrap/LaunchHandler.cs b/Bloxstrap/LaunchHandler.cs
index cf7f165..35739fd 100644
--- a/Bloxstrap/LaunchHandler.cs
+++ b/Bloxstrap/LaunchHandler.cs
@@ -202,18 +202,18 @@ namespace Bloxstrap
 
             // start bootstrapper and show the bootstrapper modal if we're not running silently
             App.Logger.WriteLine(LOG_IDENT, "Initializing bootstrapper");
-            var bootstrapper = new Bootstrapper(launchMode);
+            App.Bootstrapper = new Bootstrapper(launchMode);
             IBootstrapperDialog? dialog = null;
 
             if (!App.LaunchSettings.QuietFlag.Active)
             {
                 App.Logger.WriteLine(LOG_IDENT, "Initializing bootstrapper dialog");
                 dialog = App.Settings.Prop.BootstrapperStyle.GetNew();
-                bootstrapper.Dialog = dialog;
-                dialog.Bootstrapper = bootstrapper;
+                App.Bootstrapper.Dialog = dialog;
+                dialog.Bootstrapper = App.Bootstrapper;
             }
 
-            Task.Run(bootstrapper.Run).ContinueWith(t =>
+            Task.Run(App.Bootstrapper.Run).ContinueWith(t =>
             {
                 App.Logger.WriteLine(LOG_IDENT, "Bootstrapper task has finished");