diff --git a/email_app/app/actions/actionTypes.js b/email_app/app/actions/actionTypes.js
index 1272290..2915ad6 100644
--- a/email_app/app/actions/actionTypes.js
+++ b/email_app/app/actions/actionTypes.js
@@ -5,6 +5,8 @@ const ACTION_TYPES = {
   REFRESH_EMAIL: 'REFRESH_EMAIL',
   SET_INITIALIZER_TASK: 'SET_INITIALIZER_TASK',
   STORE_NEW_ACCOUNT: 'STORE_NEW_ACCOUNT',
+  NET_STATUS_CHANGED: 'NET_STATUS_CHANGED',
+  RECONNECT_APP: 'RECONNECT_APP',
 
   // Create Account
   CREATE_ACCOUNT: 'CREATE_ACCOUNT',
diff --git a/email_app/app/actions/initializer_actions.js b/email_app/app/actions/initializer_actions.js
index 48dc2ef..466a159 100644
--- a/email_app/app/actions/initializer_actions.js
+++ b/email_app/app/actions/initializer_actions.js
@@ -1,5 +1,5 @@
 import ACTION_TYPES from './actionTypes';
-import { authApp, connect, readConfig, writeConfig,
+import { authApp, connect, reconnect, readConfig, writeConfig,
                     readInboxEmails, readArchivedEmails } from '../safenet_comm';
 
 export const setInitializerTask = (task) => ({
@@ -14,11 +14,20 @@ export const onAuthFailure = (err) => {
   };
 };
 
+const newNetStatusCallback = (dispatch) => {
+  return function (state) {
+    dispatch({
+      type: ACTION_TYPES.NET_STATUS_CHANGED,
+      payload: state
+    });
+  }
+};
+
 export const receiveResponse = (uri) => {
   return function (dispatch) {
     return dispatch({
       type: ACTION_TYPES.AUTHORISE_APP,
-      payload: connect(uri)
+      payload: connect(uri, newNetStatusCallback(dispatch))
     });
   };
 };
@@ -28,7 +37,7 @@ export const authoriseApplication = () => {
     return dispatch({
       type: ACTION_TYPES.AUTHORISE_APP,
       payload: new Promise((resolve, reject) => {
-        authApp()
+        authApp(newNetStatusCallback(dispatch))
           .then(resolve)
           .catch(reject);
       })
@@ -37,6 +46,16 @@ export const authoriseApplication = () => {
   };
 };
 
+export const reconnectApplication = () => {
+  return function (dispatch, getState) {
+    let app = getState().initializer.app;
+    return dispatch({
+      type: ACTION_TYPES.RECONNECT_APP,
+      payload: reconnect(app)
+    });
+  };
+};
+
 export const refreshConfig = () => {
   return function (dispatch, getState) {
     let app = getState().initializer.app;
diff --git a/email_app/app/components/create_account.js b/email_app/app/components/create_account.js
index e17ac9f..ff6d113 100644
--- a/email_app/app/components/create_account.js
+++ b/email_app/app/components/create_account.js
@@ -1,6 +1,6 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
-import { MESSAGES, CONSTANTS } from '../constants';
+import { MESSAGES, CONSTANTS, SAFE_APP_ERROR_CODES } from '../constants';
 
 export default class CreateAccount extends Component {
   constructor() {
@@ -32,7 +32,7 @@ export default class CreateAccount extends Component {
     return createAccount(emailId)
         .then(this.storeCreatedAccount)
         .catch((err) => {
-          if (err.code === -104) {
+          if (err.code === SAFE_APP_ERROR_CODES.ERR_DATA_EXISTS) {
             return createAccountError(new Error(MESSAGES.EMAIL_ALREADY_TAKEN));
           }
           return createAccountError(err);
diff --git a/email_app/app/components/home.js b/email_app/app/components/home.js
index 25da6ad..9e10f1f 100755
--- a/email_app/app/components/home.js
+++ b/email_app/app/components/home.js
@@ -1,15 +1,59 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
 import { Link, IndexLink } from 'react-router';
+import Modal from 'react-modal';
 import className from 'classnames';
 import pkg from '../../package.json';
+import { CONSTANTS } from '../constants';
+
+const modalStyles = {
+  content : {
+    top                   : '50%',
+    left                  : '50%',
+    right                 : 'auto',
+    bottom                : 'auto',
+    marginRight           : '-50%',
+    transform             : 'translate(-50%, -50%)'
+  }
+};
 
 export default class Home extends Component {
+  constructor() {
+    super();
+    this.state = {
+      reconnecting: false
+    };
+
+    this.reconnect = this.reconnect.bind(this);
+  }
+
+  reconnect() {
+    this.setState({reconnecting: true});
+    return this.props.reconnectApplication()
+              .then(() => this.setState({reconnecting: false}));
+  }
+
   render() {
     const { router } = this.context;
-    const { coreData, inboxSize, savedSize } = this.props;
+    const { coreData, inboxSize, savedSize, network_status } = this.props;
+
+    const isNetworkDisconnected = (network_status !== CONSTANTS.NET_STATUS_CONNECTED);
+
     return (
       <div className="home">
+        <Modal
+          isOpen={isNetworkDisconnected}
+          shouldCloseOnOverlayClick={false}
+          style={modalStyles}
+          contentLabel="Network connection lost"
+        >
+          <div className="text-center">
+              <div>The application hast lost network connection.</div><br />
+              <div>Make sure the network link is up before trying to reconnect.</div><br />
+              <button disabled={this.state.reconnecting} className="mdl-button mdl-js-button bg-primary" onClick={this.reconnect}>Reconnect</button>
+          </div>
+        </Modal>
+
         <div className="home-b">
           <div className={className('float-btn', { hide: router.isActive('/compose_mail')  })}>
             <button className="mdl-button mdl-js-button mdl-button--fab mdl-button--primary">
diff --git a/email_app/app/components/initializer.js b/email_app/app/components/initializer.js
index 7790387..53c98be 100644
--- a/email_app/app/components/initializer.js
+++ b/email_app/app/components/initializer.js
@@ -4,9 +4,13 @@ import { remote } from 'electron';
 import { showError } from '../utils/app_utils';
 import { MESSAGES, APP_STATUS } from '../constants';
 
-const showAuthError = _ => showError('Authorisation failed',
-                                        MESSAGES.AUTHORISATION_ERROR,
-                                        _ => { remote.getCurrentWindow().close(); });
+const showAuthError = (app_status) => {
+  let message = MESSAGES.AUTHORISATION_ERROR;
+  if (app_status === APP_STATUS.AUTHORISATION_DENIED) {
+    message = MESSAGES.AUTHORISATION_DENIED;
+  }
+  showError('Authorisation failed', message, _ => { remote.getCurrentWindow().close(); });
+};
 
 export default class Initializer extends Component {
   constructor() {
@@ -40,8 +44,9 @@ export default class Initializer extends Component {
   componentDidUpdate(prevProps, prevState) {
     const { app_status, app } = this.props;
     if (prevProps.app_status === APP_STATUS.AUTHORISING
-        && app_status === APP_STATUS.AUTHORISATION_FAILED) {
-      showAuthError();
+        && (app_status === APP_STATUS.AUTHORISATION_DENIED
+            || app_status === APP_STATUS.AUTHORISATION_FAILED) ) {
+      showAuthError(app_status);
     } else if (app && app_status === APP_STATUS.AUTHORISED) {
       return this.refreshConfig();
     }
diff --git a/email_app/app/constants.js b/email_app/app/constants.js
index cef0ddc..e95230a 100644
--- a/email_app/app/constants.js
+++ b/email_app/app/constants.js
@@ -16,17 +16,26 @@ export const CONSTANTS = {
     SAVED: 'SAVED'
   },
   MAIL_CONTENT_LIMIT: 150,
-  DATE_FORMAT: 'h:MM-mmm dd'
+  DATE_FORMAT: 'h:MM-mmm dd',
+  NET_STATUS_CONNECTED: 'Connected'
 };
 
 export const APP_STATUS = {
   AUTHORISING: 'AUTHORISING',
   AUTHORISATION_FAILED: 'AUTHORISATION_FAILED',
+  AUTHORISATION_DENIED: 'AUTHORISATION_DENIED',
   AUTHORISED: 'AUTHORISED',
   READING_CONFIG: 'READING_CONFIG',
   READY: 'READY'
 }
 
+export const SAFE_APP_ERROR_CODES = {
+  ERR_AUTH_DENIED: -200,
+  ERR_NO_SUCH_ENTRY: -106,
+  ERR_DATA_EXISTS: -104,
+  ERR_OPERATION_ABORTED: -14
+}
+
 export const MESSAGES = {
   INITIALIZE: {
     AUTHORISE_APP: 'Authorising Application',
@@ -39,5 +48,6 @@ export const MESSAGES = {
   EMAIL_ID_TOO_LONG: 'Email ID is too long',
   EMAIL_ID_NOT_FOUND: 'Email ID not found on the network',
   AUTHORISATION_ERROR: 'Failed to authorise',
+  AUTHORISATION_DENIED: 'The authorisation request was denied',
   CHECK_CONFIGURATION_ERROR: 'Failed to retrieve configuration'
 };
diff --git a/email_app/app/containers/home_container.js b/email_app/app/containers/home_container.js
index 190c4a0..6c38f0c 100644
--- a/email_app/app/containers/home_container.js
+++ b/email_app/app/containers/home_container.js
@@ -1,16 +1,19 @@
 import { connect } from 'react-redux';
 import Home from '../components/home';
+import { reconnectApplication } from '../actions/initializer_actions';
 
 const mapStateToProps = state => {
   return {
     coreData: state.initializer.coreData,
     inboxSize: state.initializer.inboxSize,
-    savedSize: state.initializer.savedSize
+    savedSize: state.initializer.savedSize,
+    network_status: state.initializer.network_status
   };
 };
 
 const mapDispatchToProps = dispatch => {
   return {
+    reconnectApplication: () => (dispatch(reconnectApplication())),
   };
 };
 
diff --git a/email_app/app/reducers/initialiser.js b/email_app/app/reducers/initialiser.js
index 47ffc13..243a43a 100644
--- a/email_app/app/reducers/initialiser.js
+++ b/email_app/app/reducers/initialiser.js
@@ -1,8 +1,9 @@
 import ACTION_TYPES from '../actions/actionTypes';
-import { MESSAGES, APP_STATUS } from '../constants';
+import { MESSAGES, APP_STATUS, CONSTANTS, SAFE_APP_ERROR_CODES } from '../constants';
 
 const initialState = {
   app_status: null,
+  network_status: null,
   app: null,
   tasks: [],
   accounts: [],
@@ -27,10 +28,24 @@ const initializer = (state = initialState, action) => {
       return { ...state, app: null, app_status: APP_STATUS.AUTHORISING };
       break;
     case `${ACTION_TYPES.AUTHORISE_APP}_SUCCESS`:
-      return { ...state, app: action.payload, app_status: APP_STATUS.AUTHORISED };
+      return { ...state,
+        app: action.payload,
+        app_status: APP_STATUS.AUTHORISED,
+        network_status: CONSTANTS.NET_STATUS_CONNECTED
+      };
       break;
     case `${ACTION_TYPES.AUTHORISE_APP}_ERROR`:
-      return { ...state, app_status: APP_STATUS.AUTHORISATION_FAILED };
+      status = APP_STATUS.AUTHORISATION_FAILED;
+      if (action.payload.code === SAFE_APP_ERROR_CODES.ERR_AUTH_DENIED) {
+        status = APP_STATUS.AUTHORISATION_DENIED;
+      }
+      return { ...state, app_status: status };
+      break;
+    case ACTION_TYPES.NET_STATUS_CHANGED:
+      return { ...state, network_status: action.payload };
+      break;
+    case `${ACTION_TYPES.RECONNECT_APP}_SUCCESS`:
+      return { ...state, network_status: CONSTANTS.NET_STATUS_CONNECTED };
       break;
     case `${ACTION_TYPES.GET_CONFIG}_LOADING`:
       return { ...state, app_status: APP_STATUS.READING_CONFIG };
diff --git a/email_app/app/safenet_comm.js b/email_app/app/safenet_comm.js
index 34be4f3..299cb81 100644
--- a/email_app/app/safenet_comm.js
+++ b/email_app/app/safenet_comm.js
@@ -1,5 +1,5 @@
 import { shell } from 'electron';
-import { CONSTANTS, MESSAGES } from './constants';
+import { CONSTANTS, MESSAGES, SAFE_APP_ERROR_CODES } from './constants';
 import { initializeApp, fromAuthURI } from 'safe-app';
 import { getAuthData, saveAuthData, clearAuthData, hashPublicId, genRandomEntryKey,
          genKeyPair, encrypt, decrypt, genServiceInfo, deserialiseArray, parseUrl } from './utils/app_utils';
@@ -33,7 +33,7 @@ const requestAuth = () => {
     );
 }
 
-export const authApp = () => {
+export const authApp = (netStatusCallback) => {
   if (process.env.SAFE_FAKE_AUTH) {
     return initializeApp(APP_INFO.info)
         .then((app) => app.auth.loginForTest(APP_INFO.permissions));
@@ -41,7 +41,7 @@ export const authApp = () => {
 
   let uri = getAuthData();
   if (uri) {
-    return fromAuthURI(APP_INFO.info, uri)
+    return fromAuthURI(APP_INFO.info, uri, netStatusCallback)
       .then((registered_app) => registered_app.auth.refreshContainersPermissions()
         .then(() => registered_app)
       )
@@ -55,15 +55,19 @@ export const authApp = () => {
   return requestAuth();
 }
 
-export const connect = (uri) => {
+export const connect = (uri, netStatusCallback) => {
   let registered_app;
-  return fromAuthURI(APP_INFO.info, uri)
+  return fromAuthURI(APP_INFO.info, uri, netStatusCallback)
           .then((app) => registered_app = app)
           .then(() => saveAuthData(uri))
           .then(() => registered_app.auth.refreshContainersPermissions())
           .then(() => registered_app);
 }
 
+export const reconnect = (app) => {
+  return app.reconnect();
+}
+
 export const readConfig = (app) => {
   let account = {};
   return app.auth.getHomeContainer()
@@ -195,7 +199,7 @@ export const setupAccount = (app, emailId) => {
       .then((pub_names_md) => pub_names_md.encryptKey(serviceInfo.publicId).then((key) => pub_names_md.get(key))
         .then((services) => addEmailService(app, serviceInfo, inbox_serialised)
           , (err) => {
-            if (err.code === -106) {
+            if (err.code === SAFE_APP_ERROR_CODES.ERR_NO_SUCH_ENTRY) {
               return createPublicIdAndEmailService(app, pub_names_md,
                                                 serviceInfo, inbox_serialised);
             }
diff --git a/email_app/package.json b/email_app/package.json
index 3c6be58..01d67f4 100644
--- a/email_app/package.json
+++ b/email_app/package.json
@@ -114,6 +114,7 @@
     "react": "^15.4.2",
     "react-dom": "^15.4.2",
     "react-hot-loader": "^3.0.0-beta.6",
+    "react-modal": "^2.1.0",
     "react-redux": "^5.0.3",
     "react-router": "^3.0.2",
     "react-router-redux": "^4.0.8",