diff --git a/scripts/check-admin-account-procedures.mjs b/scripts/check-admin-account-procedures.mjs
index 1fff5253b..4880f09f6 100644
--- a/scripts/check-admin-account-procedures.mjs
+++ b/scripts/check-admin-account-procedures.mjs
@@ -144,6 +144,10 @@ async function stopStandalone(child) {
   if (child.exitCode !== null) {
     return;
   }
+  if (process.platform === 'win32') {
+    await stopWindowsProcessTree(child);
+    return;
+  }
   child.kill('SIGTERM');
   const exited = await Promise.race([
     once(child, 'exit').then(() => true),
@@ -155,6 +159,37 @@ async function stopStandalone(child) {
   }
 }
 
+async function stopWindowsProcessTree(child) {
+  if (typeof child.pid === 'number') {
+    await runTaskKill(child.pid);
+  }
+  const exited = await Promise.race([
+    once(child, 'exit').then(() => true),
+    delay(5_000).then(() => false),
+  ]);
+  if (!exited && child.exitCode === null) {
+    child.kill('SIGKILL');
+    await once(child, 'exit');
+  }
+}
+
+function runTaskKill(pid) {
+  return new Promise((resolve, reject) => {
+    const taskKill = spawn('taskkill', ['/PID', String(pid), '/T', '/F'], {
+      stdio: 'ignore',
+      shell: false,
+    });
+    taskKill.once('error', reject);
+    taskKill.once('exit', (code, signal) => {
+      if (code === 0 || code === 128 || code === 1) {
+        resolve();
+        return;
+      }
+      reject(new Error(`taskkill exited with ${signal ?? code}`));
+    });
+  });
+}
+
 async function callProcedure(serverUrl, token, procedureName, input) {
   const response = await fetch(
     `${serverUrl}/v1/database/${database}/call/${procedureName}`,
diff --git a/scripts/spacetime-editor-idempotency-smoke.mjs b/scripts/spacetime-editor-idempotency-smoke.mjs
index 4003b92ed..3b79c0836 100644
--- a/scripts/spacetime-editor-idempotency-smoke.mjs
+++ b/scripts/spacetime-editor-idempotency-smoke.mjs
@@ -228,6 +228,10 @@ export async function stopStandalone(child) {
   if (child.exitCode !== null) {
     return;
   }
+  if (process.platform === 'win32') {
+    await stopWindowsProcessTree(child);
+    return;
+  }
   child.kill('SIGTERM');
   const exited = await Promise.race([
     once(child, 'exit').then(() => true),
@@ -239,6 +243,37 @@ export async function stopStandalone(child) {
   }
 }
 
+async function stopWindowsProcessTree(child) {
+  if (typeof child.pid === 'number') {
+    await runTaskKill(child.pid);
+  }
+  const exited = await Promise.race([
+    once(child, 'exit').then(() => true),
+    delay(5_000).then(() => false),
+  ]);
+  if (!exited && child.exitCode === null) {
+    child.kill('SIGKILL');
+    await once(child, 'exit');
+  }
+}
+
+function runTaskKill(pid) {
+  return new Promise((resolve, reject) => {
+    const taskKill = spawn('taskkill', ['/PID', String(pid), '/T', '/F'], {
+      stdio: 'ignore',
+      shell: false,
+    });
+    taskKill.once('error', reject);
+    taskKill.once('exit', (code, signal) => {
+      if (code === 0 || code === 128 || code === 1) {
+        resolve();
+        return;
+      }
+      reject(new Error(`taskkill exited with ${signal ?? code}`));
+    });
+  });
+}
+
 function cliPrefix(configPath) {
   return ['--config-path', configPath];
 }