From a5cc8da05494782156d626c0cdce4009891ec61f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zolt=C3=A1n=20Papp?= <zoltan.pmail@gmail.com>
Date: Thu, 7 May 2026 13:00:51 +0200
Subject: [PATCH] [client] Pre-seed CustomActivator CLSID under HKCU
 AppUserModelId\NetBird

The Wails notifications service reads HKCU\Software\Classes\AppUserModelId\
<AppName>\CustomActivator on first startup; if present it uses that GUID
as the toast activator CLSID, otherwise it generates a fresh UUID and
writes it back. Without an installer-supplied value the per-machine GUID
diverges from the ToastActivatorCLSID baked into the Start Menu and
Desktop shortcuts, and the COM activator never fires when a toast is
clicked. Seed the same CLSID the shortcuts use so the two sides match.
---
 client/netbird.wxs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/client/netbird.wxs b/client/netbird.wxs
index ea01040d1..4ca96cab8 100644
--- a/client/netbird.wxs
+++ b/client/netbird.wxs
@@ -59,6 +59,14 @@
 			<Component Id="NetbirdAumidRegistry" Guid="*">
 				<RegistryKey Root="HKCU" Key="Software\Classes\AppUserModelId\NetBird" ForceDeleteOnUninstall="yes">
 					<RegistryValue Name="InstalledByMSI" Type="integer" Value="1" KeyPath="yes" />
+					<!-- Pre-seed the CLSID the Wails notifications service reads on
+					     first startup (notifications_windows.go:getGUID looks for
+					     the CustomActivator value under this key). Without this
+					     the service generates a fresh per-install UUID, which
+					     diverges from the ToastActivatorCLSID set on the Start
+					     Menu / Desktop shortcuts above and the COM activator
+					     never fires when a toast is clicked. -->
+					<RegistryValue Name="CustomActivator" Type="string" Value="{0E1B4DE7-E148-432B-9814-544F941826EC}" />
 				</RegistryKey>
 			</Component>
 		</StandardDirectory>