diff --git a/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/adaptors/JsonCoapAdaptor.java b/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/adaptors/JsonCoapAdaptor.java
index 45e5009a7b..3d4a4ee053 100644
--- a/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/adaptors/JsonCoapAdaptor.java
+++ b/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/adaptors/JsonCoapAdaptor.java
@@ -153,7 +153,7 @@ public class JsonCoapAdaptor implements CoapTransportAdaptor {
     private String validatePayload(UUID sessionId, Request inbound, boolean isEmptyPayloadAllowed) throws AdaptorException {
         String payload = inbound.getPayloadString();
         if (payload == null) {
-            log.warn("[{}] Payload is empty!", sessionId);
+            log.debug("[{}] Payload is empty!", sessionId);
             if (!isEmptyPayloadAllowed) {
                 throw new AdaptorException(new IllegalArgumentException("Payload is empty!"));
             }
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/JsonMqttAdaptor.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/JsonMqttAdaptor.java
index 73c0e9a32f..75c76c0cdb 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/JsonMqttAdaptor.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/JsonMqttAdaptor.java
@@ -61,7 +61,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
         try {
             return JsonConverter.convertToTelemetryProto(new JsonParser().parse(payload));
         } catch (IllegalStateException | JsonSyntaxException ex) {
-            log.warn("Failed to decode post telemetry request", ex);
+            log.debug("Failed to decode post telemetry request", ex);
             throw new AdaptorException(ex);
         }
     }
@@ -72,7 +72,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
         try {
             return JsonConverter.convertToAttributesProto(new JsonParser().parse(payload));
         } catch (IllegalStateException | JsonSyntaxException ex) {
-            log.warn("Failed to decode post attributes request", ex);
+            log.debug("Failed to decode post attributes request", ex);
             throw new AdaptorException(ex);
         }
     }
@@ -83,7 +83,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
         try {
             return JsonConverter.convertToClaimDeviceProto(ctx.getDeviceId(), payload);
         } catch (IllegalStateException | JsonSyntaxException ex) {
-            log.warn("Failed to decode claim device request", ex);
+            log.debug("Failed to decode claim device request", ex);
             throw new AdaptorException(ex);
         }
     }
@@ -164,7 +164,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
         try {
             return new JsonParser().parse(payload);
         } catch (JsonSyntaxException ex) {
-            log.warn("Payload is in incorrect format: {}", payload);
+            log.debug("Payload is in incorrect format: {}", payload);
             throw new AdaptorException(ex);
         }
     }
@@ -186,7 +186,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
             }
             return result.build();
         } catch (RuntimeException e) {
-            log.warn("Failed to decode get attributes request", e);
+            log.debug("Failed to decode get attributes request", e);
             throw new AdaptorException(e);
         }
     }
@@ -198,7 +198,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
             String payload = inbound.payload().toString(UTF8);
             return TransportProtos.ToDeviceRpcResponseMsg.newBuilder().setRequestId(requestId).setPayload(payload).build();
         } catch (RuntimeException e) {
-            log.warn("Failed to decode rpc response", e);
+            log.debug("Failed to decode rpc response", e);
             throw new AdaptorException(e);
         }
     }
@@ -210,7 +210,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
             int requestId = getRequestId(topicName, topicBase);
             return JsonConverter.convertToServerRpcRequest(new JsonParser().parse(payload), requestId);
         } catch (IllegalStateException | JsonSyntaxException ex) {
-            log.warn("Failed to decode to server rpc request", ex);
+            log.debug("Failed to decode to server rpc request", ex);
             throw new AdaptorException(ex);
         }
     }
@@ -259,7 +259,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
     private static String validatePayload(UUID sessionId, ByteBuf payloadData, boolean isEmptyPayloadAllowed) throws AdaptorException {
         String payload = payloadData.toString(UTF8);
         if (payload == null) {
-            log.warn("[{}] Payload is empty!", sessionId);
+            log.debug("[{}] Payload is empty!", sessionId);
             if (!isEmptyPayloadAllowed) {
                 throw new AdaptorException(new IllegalArgumentException("Payload is empty!"));
             }
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/ProtoMqttAdaptor.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/ProtoMqttAdaptor.java
index 1f0aef1c64..175bf17c02 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/ProtoMqttAdaptor.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/adaptors/ProtoMqttAdaptor.java
@@ -52,7 +52,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
         try {
             return JsonConverter.convertToTelemetryProto(new JsonParser().parse(ProtoConverter.dynamicMsgToJson(bytes, telemetryDynamicMsgDescriptor)));
         } catch (Exception e) {
-            log.warn("Failed to decode post telemetry request", e);
+            log.debug("Failed to decode post telemetry request", e);
             throw new AdaptorException(e);
         }
     }
@@ -65,7 +65,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
         try {
             return JsonConverter.convertToAttributesProto(new JsonParser().parse(ProtoConverter.dynamicMsgToJson(bytes, attributesDynamicMessageDescriptor)));
         } catch (Exception e) {
-            log.warn("Failed to decode post attributes request", e);
+            log.debug("Failed to decode post attributes request", e);
             throw new AdaptorException(e);
         }
     }
@@ -76,7 +76,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
         try {
             return ProtoConverter.convertToClaimDeviceProto(ctx.getDeviceId(), bytes);
         } catch (InvalidProtocolBufferException e) {
-            log.warn("Failed to decode claim device request", e);
+            log.debug("Failed to decode claim device request", e);
             throw new AdaptorException(e);
         }
     }
@@ -89,7 +89,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
             int requestId = getRequestId(topicName, topicBase);
             return ProtoConverter.convertToGetAttributeRequestMessage(bytes, requestId);
         } catch (InvalidProtocolBufferException e) {
-            log.warn("Failed to decode get attributes request", e);
+            log.debug("Failed to decode get attributes request", e);
             throw new AdaptorException(e);
         }
     }
@@ -105,7 +105,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
             JsonElement response = new JsonParser().parse(ProtoConverter.dynamicMsgToJson(bytes, rpcResponseDynamicMessageDescriptor));
             return TransportProtos.ToDeviceRpcResponseMsg.newBuilder().setRequestId(requestId).setPayload(response.toString()).build();
         } catch (Exception e) {
-            log.warn("Failed to decode rpc response", e);
+            log.debug("Failed to decode rpc response", e);
             throw new AdaptorException(e);
         }
     }
@@ -118,7 +118,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
             int requestId = getRequestId(topicName, topicBase);
             return ProtoConverter.convertToServerRpcRequest(bytes, requestId);
         } catch (InvalidProtocolBufferException e) {
-            log.warn("Failed to decode to server rpc request", e);
+            log.debug("Failed to decode to server rpc request", e);
             throw new AdaptorException(e);
         }
     }
@@ -129,7 +129,7 @@ public class ProtoMqttAdaptor implements MqttTransportAdaptor {
         try {
             return ProtoConverter.convertToProvisionRequestMsg(bytes);
         } catch (InvalidProtocolBufferException ex) {
-            log.warn("Failed to decode provision request", ex);
+            log.debug("Failed to decode provision request", ex);
             throw new AdaptorException(ex);
         }
     }
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/limits/ProxyIpFilter.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/limits/ProxyIpFilter.java
index c7a70c6d44..c6f605c9dd 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/limits/ProxyIpFilter.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/limits/ProxyIpFilter.java
@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.transport.mqtt.limits;
 
+import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.handler.codec.haproxy.HAProxyMessage;
@@ -60,7 +61,15 @@ public class ProxyIpFilter extends ChannelInboundHandlerAdapter {
 
     private void closeChannel(ChannelHandlerContext ctx) {
         while (ctx.pipeline().last() != this) {
-            ctx.pipeline().removeLast();
+            ChannelHandler handler = ctx.pipeline().removeLast();
+            if (handler instanceof ChannelInboundHandlerAdapter) {
+                try {
+                    ((ChannelInboundHandlerAdapter) handler).channelUnregistered(ctx);
+                } catch (Exception e) {
+                    log.error("Failed to unregister channel: [{}]", ctx, e);
+                }
+            }
+
         }
         ctx.pipeline().remove(this);
         ctx.close();