diff --git a/src/Magpie.Core/ExclModeHelper.cpp b/src/Magpie.Core/ExclModeHelper.cpp
index 0d0e7dec..ea9cd92e 100644
--- a/src/Magpie.Core/ExclModeHelper.cpp
+++ b/src/Magpie.Core/ExclModeHelper.cpp
@@ -39,11 +39,13 @@ wil::unique_mutex_nothrow ExclModeHelper::EnterExclMode() noexcept {
 	hr = SHQueryUserNotificationState(&state);
 	if (FAILED(hr)) {
 		Logger::Get().ComError("SHQueryUserNotificationState 失败", hr);
+		exclModeMutex.ReleaseMutex();
 		exclModeMutex.reset();
 		return exclModeMutex;
 	}
 	if (state != QUNS_RUNNING_D3D_FULL_SCREEN) {
 		Logger::Get().Error("模拟独占全屏失败");
+		exclModeMutex.ReleaseMutex();
 		exclModeMutex.reset();
 		return exclModeMutex;
 	}
diff --git a/src/Magpie.Core/ScalingWindow.cpp b/src/Magpie.Core/ScalingWindow.cpp
index b7a0254d..e7034813 100644
--- a/src/Magpie.Core/ScalingWindow.cpp
+++ b/src/Magpie.Core/ScalingWindow.cpp
@@ -412,6 +412,7 @@ LRESULT ScalingWindow::_MessageHandler(UINT msg, WPARAM wParam, LPARAM lParam) n
 	}
 	case WM_DESTROY:
 	{
+		_exclModeMutex.ReleaseMutex();
 		_exclModeMutex.reset();
 
 		_hwndDDF.reset();
diff --git a/src/Updater/main.cpp b/src/Updater/main.cpp
index af9e4d73..90607917 100644
--- a/src/Updater/main.cpp
+++ b/src/Updater/main.cpp
@@ -37,7 +37,9 @@ static bool WaitForMagpieToExit() noexcept {
 	{
 		wil::unique_mutex_nothrow hSingleInstanceMutex;
 		if (hSingleInstanceMutex.try_create(CommonSharedConstants::SINGLE_INSTANCE_MUTEX_NAME)) {
-			wil::handle_wait(hSingleInstanceMutex.get(), 10000);
+			if (wil::handle_wait(hSingleInstanceMutex.get(), 10000)) {
+				hSingleInstanceMutex.ReleaseMutex();
+			}
 		}
 	}