diff --git a/windows/welcome/src/SilverOS.Welcome.App/App.xaml.cs b/windows/welcome/src/SilverOS.Welcome.App/App.xaml.cs
index b2863e7..1991936 100644
--- a/windows/welcome/src/SilverOS.Welcome.App/App.xaml.cs
+++ b/windows/welcome/src/SilverOS.Welcome.App/App.xaml.cs
@@ -9,6 +9,14 @@ public partial class App : Application
 
 	protected override Window CreateWindow(IActivationState? activationState)
 	{
-		return new Window(new MainPage()) { Title = "SilverOS.Welcome.App" };
+		var window = new Window(new MainPage()) { Title = "SilverMetal Windows" };
+#if WINDOWS
+		window.HandlerChanged += (s, e) =>
+		{
+			if (window.Handler?.PlatformView is Microsoft.UI.Xaml.Window native)
+				native.ApplyKioskChrome();
+		};
+#endif
+		return window;
 	}
 }
diff --git a/windows/welcome/src/SilverOS.Welcome.App/Platforms/Windows/WindowExtensions.cs b/windows/welcome/src/SilverOS.Welcome.App/Platforms/Windows/WindowExtensions.cs
new file mode 100644
index 0000000..6241ba7
--- /dev/null
+++ b/windows/welcome/src/SilverOS.Welcome.App/Platforms/Windows/WindowExtensions.cs
@@ -0,0 +1,26 @@
+#if WINDOWS
+using Microsoft.UI.Windowing;
+using Microsoft.UI;
+using WinRT.Interop;
+
+namespace SilverOS.Welcome.App;
+
+public static class WindowExtensions
+{
+    // Borderless, fullscreen, non-closable kiosk window.
+    public static void ApplyKioskChrome(this Microsoft.UI.Xaml.Window winuiWindow)
+    {
+        var hwnd = WindowNative.GetWindowHandle(winuiWindow);
+        var id = Win32Interop.GetWindowIdFromWindow(hwnd);
+        var appWindow = AppWindow.GetFromWindowId(id);
+        if (appWindow.Presenter is OverlappedPresenter p)
+        {
+            p.SetBorderAndTitleBar(false, false);
+            p.IsResizable = false; p.IsMaximizable = false; p.IsMinimizable = false;
+        }
+        appWindow.SetPresenter(AppWindowPresenterKind.FullScreen);
+        // Block the close box; the wizard exits by rebooting, not by closing.
+        appWindow.Closing += (s, e) => e.Cancel = true;
+    }
+}
+#endif