diff --git a/src/messaging/ExchangeMgr.cpp b/src/messaging/ExchangeMgr.cpp
index b15bbe567ec7db..8ff2753685f1a0 100644
--- a/src/messaging/ExchangeMgr.cpp
+++ b/src/messaging/ExchangeMgr.cpp
@@ -102,6 +102,12 @@ CHIP_ERROR ExchangeManager::Shutdown()
     mMessageCounterSyncMgr.Shutdown();
     mReliableMessageMgr.Shutdown();
 
+    for (auto & ec : mContextPool)
+    {
+        // ExchangeContext leaked
+        assert(ec.GetReferenceCount() == 0);
+    }
+
     if (mSessionMgr != nullptr)
     {
         mSessionMgr->SetDelegate(nullptr);
diff --git a/src/messaging/tests/BUILD.gn b/src/messaging/tests/BUILD.gn
index 7191349fdfc50f..19fd5fb9bbb355 100644
--- a/src/messaging/tests/BUILD.gn
+++ b/src/messaging/tests/BUILD.gn
@@ -27,7 +27,6 @@ chip_test_suite("tests") {
     "MessagingContext.h",
     "TestChannel.cpp",
     "TestExchangeMgr.cpp",
-    "TestMessageCounterSyncMgr.cpp",
     "TestMessagingLayer.h",
     "TestReliableMessageProtocol.cpp",
   ]
@@ -49,7 +48,6 @@ chip_test_suite("tests") {
   tests = [
     "TestChannel",
     "TestExchangeMgr",
-    "TestMessageCounterSyncMgr",
     "TestReliableMessageProtocol",
   ]
 }
diff --git a/src/messaging/tests/TestExchangeMgr.cpp b/src/messaging/tests/TestExchangeMgr.cpp
index 9e181e87ed4d79..6a30ce4bdca45b 100644
--- a/src/messaging/tests/TestExchangeMgr.cpp
+++ b/src/messaging/tests/TestExchangeMgr.cpp
@@ -75,6 +75,7 @@ class MockAppDelegate : public ExchangeDelegate
                            System::PacketBufferHandle buffer) override
     {
         IsOnMessageReceivedCalled = true;
+        ec->Close();
     }
 
     void OnResponseTimeout(ExchangeContext * ec) override {}
@@ -102,6 +103,9 @@ void CheckNewContextTest(nlTestSuite * inSuite, void * inContext)
     auto sessionLocalToPeer = ctx.GetSecureSessionManager().GetPeerConnectionState(ec2->GetSecureSession());
     NL_TEST_ASSERT(inSuite, sessionLocalToPeer->GetPeerNodeId() == ctx.GetDestinationNodeId());
     NL_TEST_ASSERT(inSuite, sessionLocalToPeer->GetPeerKeyID() == ctx.GetPeerKeyId());
+
+    ec1->Close();
+    ec2->Close();
 }
 
 void CheckUmhRegistrationTest(nlTestSuite * inSuite, void * inContext)
@@ -157,8 +161,10 @@ void CheckExchangeMessages(nlTestSuite * inSuite, void * inContext)
     // send a good packet
     ec1->SendMessage(Protocols::Id(VendorId::Common, 0x0001), 0x0001,
                      System::PacketBufferHandle::New(System::PacketBuffer::kMaxSize),
-                     SendFlags(Messaging::SendMessageFlags::kNone));
+                     SendFlags(Messaging::SendMessageFlags::kNoAutoRequestAck));
     NL_TEST_ASSERT(inSuite, mockUnsolicitedAppDelegate.IsOnMessageReceivedCalled);
+
+    ec1->Close();
 }
 
 // Test Suite
diff --git a/src/messaging/tests/TestMessageCounterSyncMgr.cpp b/src/messaging/tests/TestMessageCounterSyncMgr.cpp
index 7cac6980bb31d1..8391f6d7154fd8 100644
--- a/src/messaging/tests/TestMessageCounterSyncMgr.cpp
+++ b/src/messaging/tests/TestMessageCounterSyncMgr.cpp
@@ -158,6 +158,8 @@ class MockAppDelegate : public ExchangeDelegate
         NL_TEST_ASSERT(mSuite, packetHeader.GetSourceNodeId() == Optional<NodeId>::Value(kSourceNodeId));
         NL_TEST_ASSERT(mSuite, packetHeader.GetDestinationNodeId() == Optional<NodeId>::Value(kDestinationNodeId));
         NL_TEST_ASSERT(mSuite, msgBuf->DataLength() == kMsgCounterChallengeSize);
+
+        ec->Close();
     }
 
     void OnResponseTimeout(ExchangeContext * ec) override {}
diff --git a/src/messaging/tests/TestReliableMessageProtocol.cpp b/src/messaging/tests/TestReliableMessageProtocol.cpp
index 524d7b0cc8d752..7b602ba4384b54 100644
--- a/src/messaging/tests/TestReliableMessageProtocol.cpp
+++ b/src/messaging/tests/TestReliableMessageProtocol.cpp
@@ -124,6 +124,8 @@ void CheckAddClearRetrans(nlTestSuite * inSuite, void * inContext)
     NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
     rm->ClearRetransTable(*entry);
     NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
+
+    exchange->Close();
 }
 
 void CheckFailRetrans(nlTestSuite * inSuite, void * inContext)
@@ -146,6 +148,8 @@ void CheckFailRetrans(nlTestSuite * inSuite, void * inContext)
     NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 1);
     rm->FailRetransTableEntries(rc, CHIP_NO_ERROR);
     NL_TEST_ASSERT(inSuite, rm->TestGetCountRetransTable() == 0);
+
+    exchange->Close();
 }
 
 void CheckResendMessage(nlTestSuite * inSuite, void * inContext)
@@ -192,6 +196,9 @@ void CheckResendMessage(nlTestSuite * inSuite, void * inContext)
     test_os_sleep_ms(65);
     ReliableMessageMgr::Timeout(&ctx.GetSystemLayer(), rm, CHIP_SYSTEM_NO_ERROR);
     NL_TEST_ASSERT(inSuite, gSendMessageCount == 3);
+
+    rm->ClearRetransTable(rc);
+    exchange->Close();
 }
 
 void CheckSendStandaloneAckMessage(nlTestSuite * inSuite, void * inContext)
@@ -210,6 +217,8 @@ void CheckSendStandaloneAckMessage(nlTestSuite * inSuite, void * inContext)
     NL_TEST_ASSERT(inSuite, rc != nullptr);
 
     NL_TEST_ASSERT(inSuite, rc->SendStandaloneAckMessage() == CHIP_NO_ERROR);
+
+    exchange->Close();
 }
 
 // Test Suite