diff --git a/modules/UI/authentication/RoomLocker.js b/modules/UI/authentication/RoomLocker.js
index 6f083483f..703cba4e5 100644
--- a/modules/UI/authentication/RoomLocker.js
+++ b/modules/UI/authentication/RoomLocker.js
@@ -25,8 +25,9 @@ function askForNewPassword () {
             function (e, v, m, f) {
                 if (v && f.lockKey) {
                     resolve(UIUtil.escapeHtml(f.lockKey));
-                } else {
-                    reject();
+                }
+                else {
+                    reject(messageHandler.CANCEL);
                 }
             },
             null, null, 'input:first'
@@ -58,7 +59,7 @@ function askForPassword () {
                 if (v && f.lockKey) {
                     resolve(UIUtil.escapeHtml(f.lockKey));
                 } else {
-                    reject();
+                    reject(messageHandler.CANCEL);
                 }
             },
             ':input:first'
@@ -79,7 +80,7 @@ function askToUnlock () {
                 if (v) {
                     resolve();
                 } else {
-                    reject();
+                    reject(messageHandler.CANCEL);
                 }
             }
         );
@@ -146,11 +147,16 @@ export default function createRoomLocker (room) {
          * @returns {Promise}
          */
         askToUnlock () {
-            return askToUnlock().then(function () {
-                return lock();
-            }).then(function () {
+            return askToUnlock().then(
+                () => { return lock(); }
+            ).then(function () {
                 AnalyticsAdapter.sendEvent('toolbar.lock.disabled');
-            });
+            }).catch(
+                reason => {
+                    if (reason !== messageHandler.CANCEL)
+                        console.error(reason);
+                }
+            );
         },
 
         /**
@@ -159,20 +165,30 @@ export default function createRoomLocker (room) {
          * @returns {Promise}
          */
         askToLock () {
-            return askForNewPassword().then(function (newPass) {
-                return lock(newPass);
-            }).then(function () {
+            return askForNewPassword().then(
+                newPass => { return lock(newPass);}
+            ).then(function () {
                 AnalyticsAdapter.sendEvent('toolbar.lock.enabled');
-            });
+            }).catch(
+                reason => {
+                    if (reason !== messageHandler.CANCEL)
+                        console.error(reason);
+                }
+            );
         },
 
         /**
          * Asks user for required conference password.
          */
         requirePassword () {
-            return askForPassword().then(function (newPass) {
-                password = newPass;
-            });
+            return askForPassword().then(
+                newPass => { password = newPass; }
+            ).catch(
+                reason => {
+                    if (reason !== messageHandler.CANCEL)
+                        console.error(reason);
+                }
+            );
         },
 
         /**
diff --git a/modules/UI/recording/Recording.js b/modules/UI/recording/Recording.js
index 1d5f75f3f..051aeda1a 100644
--- a/modules/UI/recording/Recording.js
+++ b/modules/UI/recording/Recording.js
@@ -78,7 +78,7 @@ function _requestLiveStreamId() {
                             return false;
                         }
                     } else {
-                        reject();
+                        reject(APP.UI.messageHandler.CANCEL);
                         dialog.close();
                         return false;
                     }
@@ -97,7 +97,7 @@ function _requestLiveStreamId() {
                 submit: function (e, v, m, f) {
                     e.preventDefault();
                     if (v === 0) {
-                        reject();
+                        reject(APP.UI.messageHandler.CANCEL);
                         dialog.close();
                     } else {
                         dialog.goToState('state0');
@@ -128,7 +128,7 @@ function _requestRecordingToken () {
                 if (v && f.recordingToken) {
                     resolve(UIUtil.escapeHtml(f.recordingToken));
                 } else {
-                    reject();
+                    reject(APP.UI.messageHandler.CANCEL);
                 }
             },
             null,
@@ -282,7 +282,12 @@ var Recording = {
                         _requestLiveStreamId().then((streamId) => {
                             self.eventEmitter.emit( UIEvents.RECORDING_TOGGLED,
                                 {streamId: streamId});
-                        });
+                        }).catch(
+                            reason => {
+                                if (reason !== APP.UI.messageHandler.CANCEL)
+                                    console.error(reason);
+                            }
+                        );
                     else {
                         if (self.predefinedToken) {
                             self.eventEmitter.emit( UIEvents.RECORDING_TOGGLED,
@@ -293,7 +298,12 @@ var Recording = {
                         _requestRecordingToken().then((token) => {
                             self.eventEmitter.emit( UIEvents.RECORDING_TOGGLED,
                                 {token: token});
-                        });
+                        }).catch(
+                            reason => {
+                                if (reason !== APP.UI.messageHandler.CANCEL)
+                                    console.error(reason);
+                            }
+                        );
                     }
                     break;
                 }
diff --git a/modules/UI/util/MessageHandler.js b/modules/UI/util/MessageHandler.js
index 0130b10c0..3cbebc5a6 100644
--- a/modules/UI/util/MessageHandler.js
+++ b/modules/UI/util/MessageHandler.js
@@ -10,7 +10,8 @@ import UIUtil from './UIUtil';
 var notificationsEnabled = true;
 
 var messageHandler = (function(my) {
-
+    my.OK = "dialog.OK",
+    my.CANCEL = "dialog.Cancel",
     /**
      * Shows a message to the user.
      *