diff --git a/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/auth.js b/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/auth.js
index 3e0bef4b36..a7fe6e9cd3 100644
--- a/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/auth.js
+++ b/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/auth.js
@@ -19,11 +19,18 @@ let accountId = "";
  */
 const myMSALObj = new msal.PublicClientApplication(msalConfig); 
 
-// Register Callbacks for Redirect flow
-myMSALObj.handleRedirectPromise().then(handleResponse).catch((error) => {
-    console.log(error);
+myMSALObj.initialize().then(() => {
+    setInitializedFlagTrue(); // Used as a flag in the test to ensure that MSAL has been initialized
+    // Register Callbacks for Redirect flow
+    myMSALObj.handleRedirectPromise().then(handleResponse).catch((error) => {
+        console.log(error);
+    });
 });
 
+function setInitializedFlagTrue() {
+    document.getElementById("pca-initialized").innerHTML = "true";
+};
+
 function handleResponse(resp) {
     if (resp !== null) {
         accountId = resp.account.homeAccountId;
diff --git a/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/index.html b/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/index.html
index d79b90dafb..6ea1892287 100644
--- a/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/index.html
+++ b/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/index.html
@@ -59,6 +59,9 @@ <h5 class="card-title" id="WelcomeMessage">Please sign-in to see your profile an
   </div>
   <br>
   <br>
+  <div hidden id="pca-initialized" >
+    false
+  </div>
 
   <!-- importing bootstrap.js and supporting js libraries -->
   <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"
diff --git a/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/test/browser.spec.ts b/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/test/browser.spec.ts
index 6a64b90543..c7c9b0be52 100644
--- a/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/test/browser.spec.ts
+++ b/samples/msal-browser-samples/VanillaJSTestApp2.0/app/onPageLoad/test/browser.spec.ts
@@ -1,12 +1,13 @@
 import * as puppeteer from "puppeteer";
-import { 
-    Screenshot, 
-    createFolder, 
-    setupCredentials, 
-    enterCredentials, 
+import {
+    Screenshot,
+    createFolder,
+    setupCredentials,
+    enterCredentials,
     ONE_SECOND_IN_MS,
-    getBrowser, 
-    getHomeUrl
+    getBrowser,
+    getHomeUrl,
+    pcaInitializedPoller,
 } from "e2e-test-utils/src/TestUtils";
 import { BrowserCacheUtils } from "e2e-test-utils/src/BrowserCacheTestUtils";
 import { LabApiQueryParams } from "e2e-test-utils/src/LabApiQueryParams";
@@ -27,12 +28,17 @@ describe("On Page Load tests", function () {
 
         const labApiParams: LabApiQueryParams = {
             azureEnvironment: AzureEnvironments.CLOUD,
-            appType: AppTypes.CLOUD
+            appType: AppTypes.CLOUD,
         };
 
         const labClient = new LabClient();
-        const envResponse = await labClient.getVarsByCloudEnvironment(labApiParams);
-        [username, accountPwd] = await setupCredentials(envResponse[0], labClient);
+        const envResponse = await labClient.getVarsByCloudEnvironment(
+            labApiParams
+        );
+        [username, accountPwd] = await setupCredentials(
+            envResponse[0],
+            labClient
+        );
     });
 
     let context: puppeteer.BrowserContext;
@@ -41,8 +47,9 @@ describe("On Page Load tests", function () {
     beforeEach(async () => {
         context = await browser.createIncognitoBrowserContext();
         page = await context.newPage();
-        page.setDefaultTimeout(ONE_SECOND_IN_MS*5);
+        page.setDefaultTimeout(ONE_SECOND_IN_MS * 5);
         BrowserCache = new BrowserCacheUtils(page, "sessionStorage");
+        await pcaInitializedPoller(page, 5000);
     });
 
     afterEach(async () => {
@@ -57,7 +64,9 @@ describe("On Page Load tests", function () {
     it("Performs loginRedirect on page load", async () => {
         await page.goto(sampleHomeUrl);
         const testName = "redirectBaseCase";
-        const screenshot = new Screenshot(`${SCREENSHOT_BASE_FOLDER_NAME}/${testName}`);
+        const screenshot = new Screenshot(
+            `${SCREENSHOT_BASE_FOLDER_NAME}/${testName}`
+        );
         // Home Page
         await screenshot.takeScreenshot(page, "samplePageInit");
         // Enter credentials
@@ -70,8 +79,15 @@ describe("On Page Load tests", function () {
         expect(tokenStore.idTokens).toHaveLength(1);
         expect(tokenStore.accessTokens).toHaveLength(1);
         expect(tokenStore.refreshTokens).toHaveLength(1);
-        expect(await BrowserCache.getAccountFromCache(tokenStore.idTokens[0])).toBeDefined();
-        expect(await BrowserCache.accessTokenForScopesExists(tokenStore.accessTokens, ["openid", "profile", "user.read"])).toBeTruthy();
+        expect(
+            await BrowserCache.getAccountFromCache(tokenStore.idTokens[0])
+        ).toBeDefined();
+        expect(
+            await BrowserCache.accessTokenForScopesExists(
+                tokenStore.accessTokens,
+                ["openid", "profile", "user.read"]
+            )
+        ).toBeTruthy();
         const storage = await BrowserCache.getWindowStorage();
         expect(Object.keys(storage).length).toEqual(7);
     }, 60000);
@@ -79,7 +95,9 @@ describe("On Page Load tests", function () {
     it("Performs loginRedirect on page load from a page other than redirectUri", async () => {
         await page.goto(sampleHomeUrl + "?testPage");
         const testName = "navigateToLoginRequestUrl";
-        const screenshot = new Screenshot(`${SCREENSHOT_BASE_FOLDER_NAME}/${testName}`);
+        const screenshot = new Screenshot(
+            `${SCREENSHOT_BASE_FOLDER_NAME}/${testName}`
+        );
         // Home Page
         await screenshot.takeScreenshot(page, "samplePageInit");
         // Enter credentials
@@ -92,8 +110,15 @@ describe("On Page Load tests", function () {
         expect(tokenStore.idTokens).toHaveLength(1);
         expect(tokenStore.accessTokens).toHaveLength(1);
         expect(tokenStore.refreshTokens).toHaveLength(1);
-        expect(await BrowserCache.getAccountFromCache(tokenStore.idTokens[0])).toBeDefined();
-        expect(await BrowserCache.accessTokenForScopesExists(tokenStore.accessTokens, ["openid", "profile", "user.read"])).toBeTruthy();
+        expect(
+            await BrowserCache.getAccountFromCache(tokenStore.idTokens[0])
+        ).toBeDefined();
+        expect(
+            await BrowserCache.accessTokenForScopesExists(
+                tokenStore.accessTokens,
+                ["openid", "profile", "user.read"]
+            )
+        ).toBeTruthy();
         const storage = await BrowserCache.getWindowStorage();
         expect(Object.keys(storage).length).toEqual(7);
     }, 60000);