diff --git a/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll b/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll
index 2d43b31..5b10eb2 100644
Binary files a/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll and b/Assets/uDesktopDuplication/Plugins/x86_64/uDesktopDuplication.dll differ
diff --git a/Plugins/uDesktopDuplication/uDesktopDuplication/Common.h b/Plugins/uDesktopDuplication/uDesktopDuplication/Common.h
index 090785e..2606a62 100644
--- a/Plugins/uDesktopDuplication/uDesktopDuplication/Common.h
+++ b/Plugins/uDesktopDuplication/uDesktopDuplication/Common.h
@@ -5,6 +5,7 @@
 #include <wrl/client.h>
 
 
+
 // Unity interface getter
 struct IUnityInterfaces;
 IUnityInterfaces* GetUnity();
@@ -21,6 +22,21 @@ const std::unique_ptr<MonitorManager>& GetMonitorManager();
 LUID GetUnityAdapterLuid();
 
 
+
+// Releaser
+class ScopedReleaser
+{
+public:
+    using ReleaseFuncType = std::function<void()>;
+    ScopedReleaser(ReleaseFuncType&& func) : func_(func) {}
+    ~ScopedReleaser() { func_(); }
+
+private:
+    ReleaseFuncType func_;
+};
+
+
+
 // Message is pooled and fetch from Unity.
 enum class Message
 {
@@ -32,6 +48,7 @@ enum class Message
 void SendMessageToUnity(Message message);
 
 
+
 // Buffer
 template <class T>
 class Buffer
diff --git a/Plugins/uDesktopDuplication/uDesktopDuplication/ThreadedDesktopDuplicator.cpp b/Plugins/uDesktopDuplication/uDesktopDuplication/ThreadedDesktopDuplicator.cpp
index a9a9082..da51d2a 100644
--- a/Plugins/uDesktopDuplication/uDesktopDuplication/ThreadedDesktopDuplicator.cpp
+++ b/Plugins/uDesktopDuplication/uDesktopDuplication/ThreadedDesktopDuplicator.cpp
@@ -78,25 +78,6 @@ public:
 };
 
 
-// RAII helper
-class ReleaseGuard
-{
-	ComPtr<IDXGIOutputDuplication> m_dd;
-
-	ReleaseGuard(const ReleaseGuard &)=delete;
-	ReleaseGuard& operator=(const ReleaseGuard &)=delete;
-public:
-	ReleaseGuard(const ComPtr<IDXGIOutputDuplication> &dd)
-		: m_dd(dd)
-	{}
-
-	~ReleaseGuard()
-	{
-		m_dd->ReleaseFrame();
-	}
-};
-
-
 struct QueueItem
 {
 	ComPtr<ID3D11Texture2D> Texture;
@@ -357,7 +338,33 @@ void Monitor::DuplicateAndCopyLoop()
 		}
 		else
 		{
-			ReleaseGuard guard(deskDupl_);
+            ScopedReleaser releaser([this] 
+            {
+                const auto hr = deskDupl_->ReleaseFrame();
+                if (FAILED(hr))
+                {
+                    switch (hr)
+                    {
+                        case DXGI_ERROR_ACCESS_LOST:
+                        {
+                            Debug::Log("Monitor::Render() => DXGI_ERROR_ACCESS_LOST.");
+                            state_ = State::AccessLost;
+                            break;
+                        }
+                        case DXGI_ERROR_INVALID_CALL:
+                        {
+                            Debug::Error("Monitor::Render() => DXGI_ERROR_INVALID_CALL.");
+                            break;
+                        }
+                        default:
+                        {
+                            state_ = State::Unknown;
+                            Debug::Error("Monitor::Render() => Unknown Error.");
+                            break;
+                        }
+                    }
+                }
+            });
 
 			ComPtr<ID3D11Texture2D> texture;
 			if (FAILED(resource.As(&texture))) {