diff --git a/samples/react-aad-implicitflow/package.json b/samples/react-aad-implicitflow/package.json
index 727c7528e..c08432c2f 100644
--- a/samples/react-aad-implicitflow/package.json
+++ b/samples/react-aad-implicitflow/package.json
@@ -13,7 +13,6 @@
     "@microsoft/sp-client-base": "~0.3.0",
     "@microsoft/sp-client-preview": "~0.4.0",
     "adal-angular": "^1.0.12",
-    "expose-loader": "^0.7.1",
     "office-ui-fabric-react": "0.36.0",
     "react": "0.14.8",
     "react-dom": "0.14.8"
@@ -29,4 +28,4 @@
     "clean": "gulp nuke",
     "test": "gulp test"
   }
-}
\ No newline at end of file
+}
diff --git a/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/IAdalConfig.ts b/samples/react-aad-implicitflow/src/webparts/IAdalConfig.ts
similarity index 84%
rename from samples/react-aad-implicitflow/src/webparts/upcomingMeetings/IAdalConfig.ts
rename to samples/react-aad-implicitflow/src/webparts/IAdalConfig.ts
index ead6ebf00..f2e77bb25 100644
--- a/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/IAdalConfig.ts
+++ b/samples/react-aad-implicitflow/src/webparts/IAdalConfig.ts
@@ -1,4 +1,5 @@
 export interface IAdalConfig extends adal.Config {
   popUp?: boolean;
   callback?: (error: any, token: string) => void;
+  webPartId?: string;
 }
\ No newline at end of file
diff --git a/samples/react-aad-implicitflow/src/webparts/WebPartAuthenticationContext.js b/samples/react-aad-implicitflow/src/webparts/WebPartAuthenticationContext.js
new file mode 100644
index 000000000..ed1240276
--- /dev/null
+++ b/samples/react-aad-implicitflow/src/webparts/WebPartAuthenticationContext.js
@@ -0,0 +1,83 @@
+const AuthenticationContext = require('adal-angular');
+
+AuthenticationContext.prototype._getItemSuper = AuthenticationContext.prototype._getItem;
+AuthenticationContext.prototype._saveItemSuper = AuthenticationContext.prototype._saveItem;
+AuthenticationContext.prototype.handleWindowCallbackSuper = AuthenticationContext.prototype.handleWindowCallback;
+AuthenticationContext.prototype._renewTokenSuper = AuthenticationContext.prototype._renewToken;
+AuthenticationContext.prototype.getRequestInfoSuper = AuthenticationContext.prototype.getRequestInfo;
+
+AuthenticationContext.prototype._getItem = function (key) {
+  if (this.config.webPartId) {
+    key = this.config.webPartId + '_' + key;
+  }
+
+  return this._getItemSuper(key);
+};
+
+AuthenticationContext.prototype._saveItem = function (key, object) {
+  if (this.config.webPartId) {
+    key = this.config.webPartId + '_' + key;
+  }
+
+  return this._saveItemSuper(key, object);
+};
+
+AuthenticationContext.prototype.handleWindowCallback = function (hash) {
+  if (hash == null) {
+    hash = window.location.hash;
+  }
+
+  if (!this.isCallback(hash)) {
+    return;
+  }
+
+  var requestInfo = this.getRequestInfo(hash);
+  if (requestInfo.requestType === this.REQUEST_TYPE.LOGIN) {
+    return this.handleWindowCallbackSuper(hash);
+  }
+
+  var resource = this._getResourceFromState(requestInfo.stateResponse);
+  if (!resource || resource.length === 0) {
+    return;
+  }
+
+  if (this._getItem(this.CONSTANTS.STORAGE.RENEW_STATUS + resource) === this.CONSTANTS.TOKEN_RENEW_STATUS_IN_PROGRESS) {
+    return this.handleWindowCallbackSuper(hash);
+  }
+}
+
+AuthenticationContext.prototype._renewToken = function (resource, callback) {
+  this._renewTokenSuper(resource, callback);
+  var _renewStates = this._getItem('renewStates');
+  if (_renewStates) {
+    _renewStates = _renewStates.split(';');
+  }
+  else {
+    _renewStates = [];
+  }
+  _renewStates.push(this.config.state);
+  this._saveItem('renewStates', _renewStates);
+}
+
+AuthenticationContext.prototype.getRequestInfo = function (hash) {
+  var requestInfo = this.getRequestInfoSuper(hash);
+  var _renewStates = this._getItem('renewStates');
+  if (!_renewStates) {
+    return requestInfo;
+  }
+
+  _renewStates = _renewStates.split(';');
+  for (var i = 0; i < _renewStates.length; i++) {
+    if (_renewStates[i] === requestInfo.stateResponse) {
+      requestInfo.requestType = this.REQUEST_TYPE.RENEW_TOKEN;
+      requestInfo.stateMatch = true;
+      break;
+    }
+  }
+
+  return requestInfo;
+}
+
+window.AuthenticationContext = function() {
+  return undefined;
+}
\ No newline at end of file
diff --git a/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/UpcomingMeetingsWebPart.ts b/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/UpcomingMeetingsWebPart.ts
index 33b0f4f11..56b5feccd 100644
--- a/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/UpcomingMeetingsWebPart.ts
+++ b/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/UpcomingMeetingsWebPart.ts
@@ -20,7 +20,8 @@ export default class UpcomingMeetingsWebPart extends BaseClientSideWebPart<IUpco
   public render(): void {
     const element: React.ReactElement<IUpcomingMeetingsProps> = React.createElement(UpcomingMeetings, {
       httpClient: this.context.httpClient,
-      title: this.properties.title
+      title: this.properties.title,
+      webPartId: this.context.instanceId
     });
 
     ReactDom.render(element, this.domElement);
diff --git a/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/components/UpcomingMeetings.tsx b/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/components/UpcomingMeetings.tsx
index f5c13a6a7..e15460447 100644
--- a/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/components/UpcomingMeetings.tsx
+++ b/samples/react-aad-implicitflow/src/webparts/upcomingMeetings/components/UpcomingMeetings.tsx
@@ -8,14 +8,16 @@ import {
 import styles from '../UpcomingMeetings.module.scss';
 import { IUpcomingMeetingsWebPartProps } from '../IUpcomingMeetingsWebPartProps';
 import { HttpClient } from '@microsoft/sp-client-base';
-const AuthenticationContext = require('expose?AuthenticationContext!adal-angular');
+const AuthenticationContext = require('adal-angular');
 import adalConfig from '../AdalConfig';
-import { IAdalConfig } from '../IAdalConfig';
+import { IAdalConfig } from '../../IAdalConfig';
+import '../../WebPartAuthenticationContext';
 import { ListItem } from './ListItem';
 import { IMeeting } from './IMeeting';
 
 export interface IUpcomingMeetingsProps extends IUpcomingMeetingsWebPartProps {
   httpClient: HttpClient;
+  webPartId: string;
 }
 
 export interface IUpcomingMeetingsState {
@@ -63,6 +65,7 @@ export default class UpcomingMeetings extends React.Component<IUpcomingMeetingsP
 
     const config: IAdalConfig = adalConfig;
     config.popUp = true;
+    config.webPartId = this.props.webPartId;
     config.callback = (error: any, token: string): void => {
       this.setState((previousState: IUpcomingMeetingsState, currentProps: IUpcomingMeetingsProps): IUpcomingMeetingsState => {
         previousState.error = error;
@@ -72,6 +75,7 @@ export default class UpcomingMeetings extends React.Component<IUpcomingMeetingsP
     };
 
     this.authCtx = new AuthenticationContext(config);
+    AuthenticationContext.prototype._singletonInstance = undefined;
   }
 
   public componentDidMount(): void {