diff --git a/bigbluebutton-html5/imports/api/users/server/handlers/validateAuthToken.js b/bigbluebutton-html5/imports/api/users/server/handlers/validateAuthToken.js
index 42dd7e2e7f..c9637bdd74 100644
--- a/bigbluebutton-html5/imports/api/users/server/handlers/validateAuthToken.js
+++ b/bigbluebutton-html5/imports/api/users/server/handlers/validateAuthToken.js
@@ -4,6 +4,7 @@ import Users from '/imports/api/users';
 import userJoin from './userJoin';
 import pendingAuthenticationsStore from '../store/pendingAuthentications';
 import createDummyUser from '../modifiers/createDummyUser';
+import ClientConnections from '/imports/startup/server/ClientConnections';
 
 import upsertValidationState from '/imports/api/auth-token-validation/server/modifiers/upsertValidationState';
 import { ValidationStates } from '/imports/api/auth-token-validation';
@@ -75,6 +76,7 @@ export default function handleValidateAuthToken({ body }, meetingId) {
           createDummyUser(meetingId, userId, authToken);
         }
 
+        ClientConnections.add(sessionId, methodInvocationObject.connection);
         upsertValidationState(meetingId, userId, ValidationStates.VALIDATED, methodInvocationObject.connection.id);
 
         /* End of logic migrated from validateAuthToken */
diff --git a/bigbluebutton-html5/imports/api/users/server/methods/validateAuthToken.js b/bigbluebutton-html5/imports/api/users/server/methods/validateAuthToken.js
index a53690907a..e3ca329a3a 100644
--- a/bigbluebutton-html5/imports/api/users/server/methods/validateAuthToken.js
+++ b/bigbluebutton-html5/imports/api/users/server/methods/validateAuthToken.js
@@ -1,18 +1,18 @@
 import { Meteor } from 'meteor/meteor';
 import RedisPubSub from '/imports/startup/server/redis';
 import Logger from '/imports/startup/server/logger';
-import ClientConnections from '/imports/startup/server/ClientConnections';
 import upsertValidationState from '/imports/api/auth-token-validation/server/modifiers/upsertValidationState';
 import { ValidationStates } from '/imports/api/auth-token-validation';
 import pendingAuthenticationsStore from '../store/pendingAuthentications';
 import BannedUsers from '../store/bannedUsers';
-import Users from '/imports/api/users';
 
 export default function validateAuthToken(meetingId, requesterUserId, requesterToken, externalId) {
   const REDIS_CONFIG = Meteor.settings.private.redis;
   const CHANNEL = REDIS_CONFIG.channels.toAkkaApps;
   const EVENT_NAME = 'ValidateAuthTokenReqMsg';
 
+  Logger.debug('ValidateAuthToken method called', { meetingId, requesterUserId, requesterToken, externalId });
+
   // Check if externalId is banned from the meeting
   if (externalId) {
     if (BannedUsers.has(meetingId, externalId)) {
@@ -21,24 +21,7 @@ export default function validateAuthToken(meetingId, requesterUserId, requesterT
     }
   }
 
-  // Prevent users who have left or been ejected to use the same sessionToken again.
-  const isUserInvalid = Users.findOne({
-    meetingId,
-    userId: requesterUserId,
-    authToken: requesterToken,
-    $or: [{ ejected: true }, { loggedOut: true }],
-  });
-
-  if (isUserInvalid) {
-    Logger.warn(`An invalid sessionToken tried to validateAuthToken meetingId=${meetingId} authToken=${requesterToken}`);
-    return {
-      invalid: true,
-      reason: `User has an invalid sessionToken due to ${isUserInvalid.ejected ? 'ejection' : 'log out'}`,
-      error_type: `invalid_session_token_due_to_${isUserInvalid.ejected ? 'eject' : 'log_out'}`,
-    };
-  }
-
-  ClientConnections.add(`${meetingId}--${requesterUserId}`, this.connection);
+  if (!meetingId) return false;
 
   // Store reference of methodInvocationObject ( to postpone the connection userId definition )
   pendingAuthenticationsStore.add(meetingId, requesterUserId, requesterToken, this);
diff --git a/bigbluebutton-html5/imports/startup/server/ClientConnections.js b/bigbluebutton-html5/imports/startup/server/ClientConnections.js
index 5e4ca6bdfa..9bb837f4ae 100644
--- a/bigbluebutton-html5/imports/startup/server/ClientConnections.js
+++ b/bigbluebutton-html5/imports/startup/server/ClientConnections.js
@@ -1,6 +1,10 @@
 import Logger from './logger';
 import userLeaving from '/imports/api/users/server/methods/userLeaving';
 import { extractCredentials } from '/imports/api/common/server/helpers';
+import AuthTokenValidation from '/imports/api/auth-token-validation';
+import Users from '/imports/api/users';
+
+const { enabled, syncInterval } = Meteor.settings.public.syncUsersWithConnectionManager;
 
 class ClientConnections {
   constructor() {
@@ -11,10 +15,15 @@ class ClientConnections {
       this.print();
     }, 30000);
 
-    // setTimeout(() => {
-    //   this.syncConnectionsWithServer();
-    // }, 10000);
+    if (enabled) {
+      const syncConnections = Meteor.bindEnvironment(() => {
+        this.syncConnectionsWithServer();
+      });
 
+      setInterval(() => {
+        syncConnections();
+      }, syncInterval);
+    }
   }
 
   add(sessionId, connection) {
@@ -29,6 +38,13 @@ class ClientConnections {
 
     const { meetingId, requesterUserId: userId } = extractCredentials(sessionId);
 
+    if (!meetingId) {
+      Logger.error('Error on add new client connection. sessionId=${sessionId} connection=${connection.id}',
+        { logCode: 'client_connections_add_error_meeting_id_null', extraInfo: { meetingId, userId } }
+      );
+      return false;
+    }
+
     if (!this.exists(meetingId)) {
       Logger.info(`Meeting not found in connections: meetingId=${meetingId}`);
       this.createMeetingConnections(meetingId);
@@ -92,7 +108,7 @@ class ClientConnections {
     Logger.info(`Removing connectionId for user. sessionId=${sessionId} connectionId=${connectionId}`);
     const { meetingId, requesterUserId: userId } = extractCredentials(sessionId);
 
-    const meetingConnections = this.connections.get(meetingId)
+    const meetingConnections = this.connections.get(meetingId);
 
     if (meetingConnections?.has(userId)) {
       const filteredConnections = meetingConnections.get(userId).filter(c => c !== connectionId);
@@ -109,7 +125,38 @@ class ClientConnections {
   }
 
   syncConnectionsWithServer() {
-    console.error('syncConnectionsWithServer', Array.from(Meteor.server.sessions.keys()), Meteor.server);
+    Logger.info('Syncing ClientConnections with server');
+    const activeConnections = Array.from(Meteor.server.sessions.keys());
+
+    Logger.debug(`Found ${activeConnections.length} active connections in server`);
+
+    const onlineUsers = AuthTokenValidation
+      .find(
+        { connectionId: { $in: activeConnections } },
+        { fields: { meetingId: 1, userId: 1 } }
+      )
+      .fetch();
+
+    const onlineUsersId = onlineUsers.map(({ userId }) => userId);
+
+    const usersQuery = { userId: { $nin: onlineUsersId } };
+
+    const userWithoutConnectionIds = Users.find(usersQuery, { fields: { meetingId: 1, userId: 1 } }).fetch();
+
+    const removedUsersWithoutConnection = Users.remove(usersQuery);
+
+    if (removedUsersWithoutConnection) {
+      Logger.info(`Removed ${removedUsersWithoutConnection} users that are not connected`);
+      Logger.info(`Clearing connections`);
+      try {
+        userWithoutConnectionIds
+          .forEach(({ meetingId, userId }) => {
+            this.removeClientConnection(`${meetingId}--${userId}`);
+          });
+      } catch (err) {
+        Logger.error('Error on sync ClientConnections', err);
+      }
+    }
   }
 
 }
diff --git a/bigbluebutton-html5/private/config/settings.yml b/bigbluebutton-html5/private/config/settings.yml
index 886764a141..c80f93df1c 100755
--- a/bigbluebutton-html5/private/config/settings.yml
+++ b/bigbluebutton-html5/private/config/settings.yml
@@ -272,9 +272,9 @@ public:
       mobilePageSizes:
         moderator: 2
         viewer: 2
-  pingPong:
-    clearUsersInSeconds: 180
-    pongTimeInSeconds: 15
+  syncUsersWithConnectionManager:
+    enabled: false
+    syncInterval: 60000
   allowOutsideCommands:
     toggleRecording: false
     toggleSelfVoice: false