diff --git a/api/src/Kurs.Platform.HttpApi.Host/Classroom/ClassroomHub.cs b/api/src/Kurs.Platform.HttpApi.Host/Classroom/ClassroomHub.cs
index 72053081..2b9abbd1 100644
--- a/api/src/Kurs.Platform.HttpApi.Host/Classroom/ClassroomHub.cs
+++ b/api/src/Kurs.Platform.HttpApi.Host/Classroom/ClassroomHub.cs
@@ -117,6 +117,8 @@ public class ClassroomHub : Hub
     [HubMethodName("JoinClass")]
     public async Task JoinClassAsync(Guid sessionId, Guid userId, string userName, bool isTeacher, bool isActive)
     {
+        _logger.LogInformation("🔵 JoinClass çağrıldı: User={UserId}, Session={SessionId}, IsTeacher={IsTeacher}", userId, sessionId, isTeacher);
+
         var classroom = await _classSessionRepository.GetAsync(sessionId);
         if (classroom == null)
         {
@@ -398,14 +400,17 @@ public class ClassroomHub : Hub
                 x => x.SessionId == sessionId && x.UserId == participantId
             );
 
+            _logger.LogInformation("👢 KickParticipant çağrıldı: Session={SessionId}, Target={ParticipantId}", sessionId, participantId);
+
             if (participant == null)
             {
-                _logger.LogWarning(
-                    "KickParticipant: Session {SessionId} için participant {ParticipantId} bulunamadı",
-                    sessionId, participantId);
+                _logger.LogWarning("⚠️ KickParticipant: participant bulunamadı (Session={SessionId}, Target={ParticipantId})", sessionId, participantId);
                 return;
             }
 
+            _logger.LogInformation("✅ Kick öncesi durum: IsActive={IsActive}, IsKicked={IsKicked}, ConnId={ConnId}", participant.IsActive, participant.IsKicked, participant.ConnectionId);
+
+
             // ConnectionId'yi cache et (null yazmadan önce)
             var connectionId = participant.ConnectionId;
 
@@ -519,6 +524,8 @@ public class ClassroomHub : Hub
                 return;
             }
 
+            _logger.LogInformation("🔴 OnDisconnectedAsync: User={UserId}, ConnId={ConnId}, Exception={Exception}", userId, Context.ConnectionId, exception?.Message);
+
             // 🔑 Aynı anda birden fazla session olabilir (tab senaryosu)
             var participants = await _participantRepository
                 .GetListAsync(x => x.UserId == userId.Value && x.ConnectionId == Context.ConnectionId);
diff --git a/ui/src/services/classroom/signalr.tsx b/ui/src/services/classroom/signalr.tsx
index 81fd3dc9..fa8f7765 100644
--- a/ui/src/services/classroom/signalr.tsx
+++ b/ui/src/services/classroom/signalr.tsx
@@ -102,7 +102,8 @@ export class SignalRService {
 
     this.connection.onreconnected(async () => {
       this.isConnected = true
-      console.warn('🔄 SignalR reconnected')
+      console.log("🔄 SignalR reconnected. currentSessionId=", this.currentSessionId)
+
       toast.push(<Notification title="🔄 Bağlantı tekrar kuruldu" type="success" />, {
         placement: 'top-center',
       })
@@ -115,7 +116,7 @@ export class SignalRService {
     })
 
     this.connection.onclose(async (err) => {
-      console.warn('🔥 onclose triggered, isKicked=', this.isKicked)
+      console.warn("🔥 onclose triggered", { isKicked: this.isKicked, error: err })
 
       if (this.isKicked) {
         toast.push(
@@ -158,7 +159,8 @@ export class SignalRService {
     })
 
     this.connection.on('ForceDisconnect', async (message: string) => {
-      console.warn('🚨 ForceDisconnect geldi:', message)
+      console.warn("🚨 ForceDisconnect event alındı", message)
+
       this.isKicked = true
       toast.push(<Notification title={`❌ Sınıftan çıkarıldınız: ${message}`} type="danger" />, {
         placement: 'top-center',
@@ -191,6 +193,8 @@ export class SignalRService {
 
   async start(): Promise<void> {
     try {
+      console.log('🔌 SignalR start() çağrıldı')
+
       const startPromise = this.connection.start()
       const timeout = new Promise((_, reject) =>
         setTimeout(() => reject(new Error('Bağlantı zaman aşımına uğradı')), 10000),
@@ -221,6 +225,7 @@ export class SignalRService {
       console.log('Error starting SignalR connection join class for', userName)
       return
     }
+    console.log(`📡 joinClass: sessionId=${sessionId}, userId=${userId}, isTeacher=${isTeacher}`)
 
     //Global değişkene yazılıyor.
     this.currentSessionId = sessionId
@@ -426,6 +431,8 @@ export class SignalRService {
       return
     }
 
+    console.log(`👢 kickParticipant çağrıldı: sessionId=${sessionId}, participantId=${participantId}`)
+
     try {
       await this.connection.invoke('KickParticipant', sessionId, participantId)
     } catch (error) {
diff --git a/ui/src/views/classroom/RoomDetail.tsx b/ui/src/views/classroom/RoomDetail.tsx
index f44d9f73..3000ee3f 100644
--- a/ui/src/views/classroom/RoomDetail.tsx
+++ b/ui/src/views/classroom/RoomDetail.tsx
@@ -364,7 +364,8 @@ const RoomDetail: React.FC = () => {
       })
 
       signalRServiceRef.current.setParticipantLeaveHandler(({ userId, sessionId }) => {
-        console.log(`Participant left: ${userId} from session ${sessionId}`)
+        console.log(`👋 Participant left handler: ${userId}, sessionId=${sessionId}`)
+
         toast.push(<Notification title={`Katılımcı ayrıldı: ${participants.find((p) => p.id === userId)?.name}`} type="warning" />, {
           placement: 'top-center',
         })
@@ -560,9 +561,9 @@ const RoomDetail: React.FC = () => {
 
   const handleKickParticipant = async (participantId: string) => {
     if (signalRServiceRef.current && user.role === 'teacher') {
+      console.log(`👢 handleKickParticipant UI’den çağrıldı: ${participantId}`)
+
       await signalRServiceRef.current.kickParticipant(classSession.id, participantId)
-      // ❌ state’den manuel silme yok
-      // attendance update kısmı aynı kalabilir
       setAttendanceRecords((prev) =>
         prev.map((r) => {
           if (r.studentId === participantId && !r.leaveTime) {