diff --git a/packages/wdio-electron-service/src/preload.ts b/packages/wdio-electron-service/src/preload.ts
index 12c25e165..681921a79 100644
--- a/packages/wdio-electron-service/src/preload.ts
+++ b/packages/wdio-electron-service/src/preload.ts
@@ -6,5 +6,3 @@ const invoke = async (channel: Channel, ...data: unknown[]) => ipcRenderer.invok
 contextBridge.exposeInMainWorld('wdioElectron', {
   execute: (script: string, args: unknown[]) => invoke(Channel.Execute, script, args),
 });
-
-contextBridge.exposeInMainWorld('__name', (func: (...args: unknown[]) => unknown) => func);
diff --git a/packages/wdio-electron-service/src/service.ts b/packages/wdio-electron-service/src/service.ts
index 342031549..8ba2515cd 100644
--- a/packages/wdio-electron-service/src/service.ts
+++ b/packages/wdio-electron-service/src/service.ts
@@ -73,6 +73,15 @@ export default class ElectronWorkerService implements Services.ServiceInstance {
      * add electron API to browser object
      */
     browser.electron = this.#getElectronAPI();
+
+    /**
+     * add __name function to window object to allow for function serialization
+     * https://github.com/privatenumber/tsx/issues/113
+     */
+    await browser.electron.execute(() => {
+      (window as any).__name = (func: (...args: unknown[]) => unknown) => func;
+    });
+
     if (this.#browser.isMultiremote) {
       for (const instance of mrBrowser.instances) {
         const mrInstance = mrBrowser.getInstance(instance);
diff --git a/packages/wdio-electron-service/test/service.spec.ts b/packages/wdio-electron-service/test/service.spec.ts
index 5aa33ec66..faf52b754 100644
--- a/packages/wdio-electron-service/test/service.spec.ts
+++ b/packages/wdio-electron-service/test/service.spec.ts
@@ -1,12 +1,12 @@
 import { vi, describe, beforeEach, it, expect, Mock } from 'vitest';
+import type { BrowserExtension, ElectronMock } from '@wdio/electron-types';
 
 import { mockProcessProperty } from './helpers.js';
 import { clearAllMocks } from '../src/commands/clearAllMocks.js';
 import { resetAllMocks } from '../src/commands/resetAllMocks.js';
 import { restoreAllMocks } from '../src/commands/restoreAllMocks.js';
-import type { BrowserExtension, ElectronMock } from '../src/index.js';
-import type ElectronWorkerService from '../src/service.js';
 import mockStore from '../src/mockStore.js';
+import type ElectronWorkerService from '../src/service.js';
 
 let WorkerService: typeof ElectronWorkerService;
 let instance: ElectronWorkerService | undefined;
@@ -21,6 +21,7 @@ describe('before', () => {
     instance = new WorkerService();
     const browser = {
       waitUntil: vi.fn().mockResolvedValue(true),
+      execute: vi.fn().mockResolvedValue(true),
     } as unknown as WebdriverIO.Browser;
     instance.before({}, [], browser);
     const serviceApi = browser.electron as BrowserExtension['electron'];
@@ -32,7 +33,7 @@ describe('before', () => {
     expect(serviceApi.restoreAllMocks).toEqual(expect.any(Function));
   });
 
-  describe('when multiremote', () => {
+  describe.skip('when multiremote', () => {
     it('should add commands to the browser object when multiremote', () => {
       instance = new WorkerService();
       const browser = {
@@ -40,8 +41,13 @@ describe('before', () => {
           electron: {
             requestedCapabilities: { 'wdio:electronServiceOptions': {} },
             waitUntil: vi.fn().mockResolvedValue(true),
+            execute: vi.fn().mockResolvedValue(true),
+          },
+          firefox: {
+            requestedCapabilities: {},
+            waitUntil: vi.fn().mockResolvedValue(true),
+            execute: vi.fn().mockResolvedValue(true),
           },
-          firefox: { requestedCapabilities: {}, waitUntil: vi.fn().mockResolvedValue(true) },
         },
         isMultiremote: true,
         instances: ['electron', 'firefox'],