diff --git a/JitsiConferenceErrors.spec.ts b/JitsiConferenceErrors.spec.ts
index 5eca85a7ed..5825759bd3 100644
--- a/JitsiConferenceErrors.spec.ts
+++ b/JitsiConferenceErrors.spec.ts
@@ -4,6 +4,7 @@ import * as exported from "./JitsiConferenceErrors";
 
 describe( "/JitsiConferenceErrors members", () => {
     const {
+        AUTH_ERROR_TYPES,
         AUTHENTICATION_REQUIRED,
         CHAT_ERROR,
         SETTINGS_ERROR,
@@ -30,6 +31,11 @@ describe( "/JitsiConferenceErrors members", () => {
     } = exported;
 
     it( "known members", () => {
+        expect( AUTH_ERROR_TYPES.GENERAL ).toBe( 'general' );
+        expect( AUTH_ERROR_TYPES.NO_MAIN_PARTICIPANTS ).toBe( 'no-main-participants' );
+        expect( AUTH_ERROR_TYPES.NO_VISITORS_LOBBY ).toBe( 'no-visitors-lobby' );
+        expect( AUTH_ERROR_TYPES.PROMOTION_NOT_ALLOWED ).toBe( 'promotion-not-allowed' );
+        expect( AUTH_ERROR_TYPES.ROOM_CREATION_RESTRICTION ).toBe( 'room-creation-restriction' );
         expect( AUTHENTICATION_REQUIRED ).toBe( 'conference.authenticationRequired' );
         expect( CHAT_ERROR ).toBe( 'conference.chatError' );
         expect( SETTINGS_ERROR ).toBe( 'conference.settingsError' );
diff --git a/JitsiConferenceErrors.ts b/JitsiConferenceErrors.ts
index e133b0f2d0..62f8babfb3 100644
--- a/JitsiConferenceErrors.ts
+++ b/JitsiConferenceErrors.ts
@@ -116,6 +116,17 @@ export enum JitsiConferenceErrors {
     VIDEOBRIDGE_NOT_AVAILABLE = 'conference.videobridgeNotAvailable'
 }
 
+/**
+ * Types that are passed for NOT_ALLOWED_ERROR.
+ */
+export enum AUTH_ERROR_TYPES {
+    GENERAL = 'general',
+    NO_MAIN_PARTICIPANTS = 'no-main-participants',
+    NO_VISITORS_LOBBY = 'no-visitors-lobby',
+    PROMOTION_NOT_ALLOWED = 'promotion-not-allowed',
+    ROOM_CREATION_RESTRICTION = 'room-creation-restriction'
+}
+
 // exported for backward compatibility
 export const AUTHENTICATION_REQUIRED = JitsiConferenceErrors.AUTHENTICATION_REQUIRED;
 export const CHAT_ERROR = JitsiConferenceErrors.CHAT_ERROR;
diff --git a/JitsiMeetJS.ts b/JitsiMeetJS.ts
index 9fa087f420..b7fff14a6c 100644
--- a/JitsiMeetJS.ts
+++ b/JitsiMeetJS.ts
@@ -19,7 +19,6 @@ import { TrackStreamingStatus } from './modules/connectivity/TrackStreamingStatu
 import getActiveAudioDevice from './modules/detection/ActiveDeviceDetector';
 import * as DetectionEvents from './modules/detection/DetectionEvents';
 import TrackVADEmitter from './modules/detection/TrackVADEmitter';
-import FeatureFlags from './modules/flags/FeatureFlags';
 import ProxyConnectionService
     from './modules/proxyconnection/ProxyConnectionService';
 import recordingConstants from './modules/recording/recordingConstants';
diff --git a/modules/xmpp/ChatRoom.js b/modules/xmpp/ChatRoom.js
index 7172b01f51..fabadbbf54 100644
--- a/modules/xmpp/ChatRoom.js
+++ b/modules/xmpp/ChatRoom.js
@@ -4,6 +4,7 @@ import $ from 'jquery';
 import isEqual from 'lodash.isequal';
 import { $iq, $msg, $pres, Strophe } from 'strophe.js';
 
+import { AUTH_ERROR_TYPES } from '../../JitsiConferenceErrors';
 import * as JitsiTranscriptionStatus from '../../JitsiTranscriptionStatus';
 import { MediaType } from '../../service/RTC/MediaType';
 import { VideoType } from '../../service/RTC/VideoType';
@@ -1254,11 +1255,14 @@ export default class ChatRoom extends Listenable {
 
                 const txtNode = $(pres).find('>error[type="cancel"]>text[xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"]');
                 const txt = txtNode.length && txtNode.text();
+                let type = AUTH_ERROR_TYPES.GENERAL;
 
                 // a race where we have sent a conference request to jicofo and jicofo was about to leave or just left
                 // because of no participants in the room, and we tried to create the room, without having
                 // permissions for that (only jicofo creates rooms)
                 if (txt === 'Room creation is restricted') {
+                    type = AUTH_ERROR_TYPES.ROOM_CREATION_RESTRICTION;
+
                     if (!this._roomCreationRetries) {
                         this._roomCreationRetries = 0;
                     }
@@ -1275,9 +1279,18 @@ export default class ChatRoom extends Listenable {
 
                         return;
                     }
+                } else if ($(pres).find(
+                    '>error[type="cancel"]>no-main-participants[xmlns="jitsi:visitors"]').length > 0) {
+                    type = AUTH_ERROR_TYPES.NO_MAIN_PARTICIPANTS;
+                } else if ($(pres).find(
+                    '>error[type="cancel"]>promotion-not-allowed[xmlns="jitsi:visitors"]').length > 0) {
+                    type = AUTH_ERROR_TYPES.PROMOTION_NOT_ALLOWED;
+                } else if ($(pres).find(
+                    '>error[type="cancel"]>no-visitors-lobby[xmlns="jitsi:visitors"]').length > 0) {
+                    type = AUTH_ERROR_TYPES.NO_VISITORS_LOBBY;
                 }
 
-                this.eventEmitter.emit(XMPPEvents.ROOM_CONNECT_NOT_ALLOWED_ERROR, txt);
+                this.eventEmitter.emit(XMPPEvents.ROOM_CONNECT_NOT_ALLOWED_ERROR, type, txt);
             }
         } else if ($(pres).find('>error>service-unavailable').length) {
             logger.warn('Maximum users limit for the room has been reached',