diff --git a/example-cjs/e2e/interaction.spec.ts b/example-cjs/e2e/interaction.spec.ts
index a2d74558..1d6e7663 100644
--- a/example-cjs/e2e/interaction.spec.ts
+++ b/example-cjs/e2e/interaction.spec.ts
@@ -21,7 +21,7 @@ describe('application loading', () => {
     describe('when the make larger button is clicked', () => {
       it('should increase the window height and width by 10 pixels', async () => {
         let bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
@@ -36,7 +36,7 @@ describe('application loading', () => {
         biggerClickCount = await browser.$('.click-count .bigger').getText();
         expect(biggerClickCount).toEqual('1');
         bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
@@ -50,7 +50,7 @@ describe('application loading', () => {
     describe('when the make smaller button is clicked', () => {
       it('should decrease the window height and width by 10 pixels', async () => {
         let bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
@@ -61,7 +61,7 @@ describe('application loading', () => {
         const elem = await browser.$('.make-smaller');
         await elem.click();
         bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
diff --git a/example/e2e/interaction.spec.ts b/example/e2e/interaction.spec.ts
index a2d74558..1d6e7663 100644
--- a/example/e2e/interaction.spec.ts
+++ b/example/e2e/interaction.spec.ts
@@ -21,7 +21,7 @@ describe('application loading', () => {
     describe('when the make larger button is clicked', () => {
       it('should increase the window height and width by 10 pixels', async () => {
         let bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
@@ -36,7 +36,7 @@ describe('application loading', () => {
         biggerClickCount = await browser.$('.click-count .bigger').getText();
         expect(biggerClickCount).toEqual('1');
         bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
@@ -50,7 +50,7 @@ describe('application loading', () => {
     describe('when the make smaller button is clicked', () => {
       it('should decrease the window height and width by 10 pixels', async () => {
         let bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
@@ -61,7 +61,7 @@ describe('application loading', () => {
         const elem = await browser.$('.make-smaller');
         await elem.click();
         bounds = (await browser.electron.execute((electron) => {
-          const browserWindow = electron.BrowserWindow.getFocusedWindow() as BrowserWindow;
+          const browserWindow = electron.BrowserWindow.getAllWindows()[0] as BrowserWindow;
           return browserWindow.getBounds();
         })) as {
           width: number;
diff --git a/src/service.ts b/src/service.ts
index 52ecfbaa..3bf5fbb8 100644
--- a/src/service.ts
+++ b/src/service.ts
@@ -34,11 +34,11 @@ export default class ElectronWorkerService implements Services.ServiceInstance {
     return Object.assign({}, api) as BrowserExtension['electron'];
   }
 
-  before(
+  async before(
     _capabilities: Capabilities.RemoteCapability,
     _specs: string[],
     instance: WebdriverIO.Browser | WebdriverIO.MultiRemoteBrowser,
-  ): void {
+  ): Promise<void> {
     const browser = instance as WebdriverIO.Browser;
     const mrBrowser = instance as WebdriverIO.MultiRemoteBrowser;
     this.#browser = browser;
@@ -57,10 +57,24 @@ export default class ElectronWorkerService implements Services.ServiceInstance {
         if (!caps[CUSTOM_CAPABILITY_NAME]) {
           continue;
         }
-        log.debug('Adding Electron API to browser object instance named: ', instance);
 
+        log.debug('Adding Electron API to browser object instance named: ', instance);
         mrInstance.electron = this.#getElectronAPI(mrInstance);
+
+        // wait until an Electron BrowserWindow is available
+        await mrInstance.waitUntil(async () => {
+          const numWindows = await mrInstance.electron.execute(
+            (electron) => electron.BrowserWindow.getAllWindows().length,
+          );
+          return numWindows > 0;
+        });
       }
+    } else {
+      // wait until an Electron BrowserWindow is available
+      await browser.waitUntil(async () => {
+        const numWindows = await browser.electron.execute((electron) => electron.BrowserWindow.getAllWindows().length);
+        return numWindows > 0;
+      });
     }
   }
 }
diff --git a/test/service.spec.ts b/test/service.spec.ts
index 019b1ec4..b671e4fd 100644
--- a/test/service.spec.ts
+++ b/test/service.spec.ts
@@ -1,4 +1,4 @@
-import { describe, beforeEach, it, expect } from 'vitest';
+import { vi, describe, beforeEach, it, expect } from 'vitest';
 
 import { mockProcessProperty } from './helpers';
 import type { BrowserExtension } from '../src';
@@ -15,7 +15,9 @@ describe('before', () => {
 
   it('should add commands to the browser object', () => {
     instance = new WorkerService();
-    const browser = {} as unknown as WebdriverIO.Browser;
+    const browser = {
+      waitUntil: vi.fn().mockResolvedValue(true),
+    } as unknown as WebdriverIO.Browser;
     instance.before({}, [], browser);
     const serviceApi = browser.electron as BrowserExtension['electron'];
     expect(serviceApi.execute).toEqual(expect.any(Function));
@@ -29,8 +31,11 @@ describe('before', () => {
       instance = new WorkerService();
       const browser = {
         instanceMap: {
-          electron: { requestedCapabilities: { 'wdio:electronServiceOptions': {} } },
-          firefox: { requestedCapabilities: {} },
+          electron: {
+            requestedCapabilities: { 'wdio:electronServiceOptions': {} },
+            waitUntil: vi.fn().mockResolvedValue(true),
+          },
+          firefox: { requestedCapabilities: {}, waitUntil: vi.fn().mockResolvedValue(true) },
         },
         isMultiremote: true,
         instances: ['electron', 'firefox'],
@@ -40,7 +45,6 @@ describe('before', () => {
       instance.before({}, [], instance.browser);
 
       const electronInstance = instance.browser.getInstance('electron');
-      console.log('ZOMG', electronInstance, browser);
       let serviceApi = electronInstance.electron;
       expect(serviceApi.execute).toEqual(expect.any(Function));
       expect(serviceApi.mock).toEqual(expect.any(Function));