From e1f4e6fafb20410220e4fa1b4aebc8c07c642117 Mon Sep 17 00:00:00 2001
From: Mohamed Boudra <boudra.moha@gmail.com>
Date: Tue, 10 Mar 2026 19:43:30 +0700
Subject: [PATCH] Fix Windows smoke relay launch

---
 packages/desktop/scripts/managed-daemon-smoke.mjs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/desktop/scripts/managed-daemon-smoke.mjs b/packages/desktop/scripts/managed-daemon-smoke.mjs
index 91edd97cf..2eca7d71b 100644
--- a/packages/desktop/scripts/managed-daemon-smoke.mjs
+++ b/packages/desktop/scripts/managed-daemon-smoke.mjs
@@ -487,10 +487,17 @@ let externalPid = null;
 let startedTemporaryExternalDaemon = false;
 let relayProcess = null;
 const forbiddenManagedReferences = ["127.0.0.1:6767", fakePaseoHome, managedRuntimeDir];
+const npmExecPath = process.env.npm_execpath;
+if (!npmExecPath) {
+  throw new Error("npm_execpath is required to launch wrangler during managed desktop smoke tests.");
+}
 
 try {
   logStep(`Starting isolated local relay on ${relayEndpoint}`);
-  relayProcess = spawn(process.platform === "win32" ? "npx.cmd" : "npx", [
+  relayProcess = spawn(process.execPath, [
+    npmExecPath,
+    "exec",
+    "--",
     "wrangler",
     "dev",
     "--local",