diff --git a/BdaSpecials/IT35/TVTestRemocon/CCOMProc-x3U4Remocon.cpp b/BdaSpecials/IT35/TVTestRemocon/CCOMProc-x3U4Remocon.cpp
index 2dd6908..e4b57e0 100644
--- a/BdaSpecials/IT35/TVTestRemocon/CCOMProc-x3U4Remocon.cpp
+++ b/BdaSpecials/IT35/TVTestRemocon/CCOMProc-x3U4Remocon.cpp
@@ -39,7 +39,12 @@ CCOMProc::CCOMProc(void)
 
 CCOMProc::~CCOMProc(void)
 {
-	TerminateThread();
+	if (hThread) {
+		::SetEvent(hTerminateRequest);
+		::WaitForSingleObject(hThread, 1000);
+		::CloseHandle(hThread);
+		hThread = NULL;
+	}
 	if (hThreadInitComp) {
 		::CloseHandle(hThreadInitComp);
 		hThreadInitComp = NULL;
diff --git a/BdaSpecials/IT35/WinSCard-x3U4/CCOMProc-x3U4.cpp b/BdaSpecials/IT35/WinSCard-x3U4/CCOMProc-x3U4.cpp
index 99a2777..c46f51f 100644
--- a/BdaSpecials/IT35/WinSCard-x3U4/CCOMProc-x3U4.cpp
+++ b/BdaSpecials/IT35/WinSCard-x3U4/CCOMProc-x3U4.cpp
@@ -42,7 +42,12 @@ CCOMProc::CCOMProc(void)
 
 CCOMProc::~CCOMProc(void)
 {
-	TerminateThread();
+	if (hThread) {
+		::SetEvent(hTerminateRequest);
+		::WaitForSingleObject(hThread, 1000);
+		::CloseHandle(hThread);
+		hThread = NULL;
+	}
 	if (hThreadInitComp) {
 		::CloseHandle(hThreadInitComp);
 		hThreadInitComp = NULL;
diff --git a/BdaSpecials/IT35/WinSCard-x3U4/WinSCard-x3U4.cpp b/BdaSpecials/IT35/WinSCard-x3U4/WinSCard-x3U4.cpp
index 6c8b152..d102ea8 100644
--- a/BdaSpecials/IT35/WinSCard-x3U4/WinSCard-x3U4.cpp
+++ b/BdaSpecials/IT35/WinSCard-x3U4/WinSCard-x3U4.cpp
@@ -21,7 +21,7 @@ static const WCHAR LIST_READERS_W[] = L"Plex PX-x3U4 Card Reader 0\0";
 static BYTE IFSD = 254;						// IFD側の最大受信可能ブロックサイズ
 
 static BOOL l_bInitialized = FALSE;
-
+static DWORD l_dwEstablishedContext = 0;
 static HANDLE l_hStartedEvent = NULL;
 static HMODULE l_hModule = NULL;
 static HANDLE l_hSemaphore = NULL;
@@ -327,7 +327,6 @@ BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserv
 		break;
 
 	case DLL_PROCESS_DETACH:
-		COMProc.TerminateThread();
 		CloseAllHandle();
 		if (l_hStartedEvent) {
 			try {
@@ -408,6 +407,9 @@ LONG WINAPI SCardDisconnect_(SCARDHANDLE hCard, DWORD dwDisposition)
 
 LONG WINAPI SCardEstablishContext_(DWORD dwScope, LPCVOID pvReserved1, LPCVOID pvReserved2, LPSCARDCONTEXT phContext)
 {
+	l_dwEstablishedContext++;
+	OutputDebug(L"SCardEstablishContext: Count=%d.\n", l_dwEstablishedContext);
+
 	*phContext = DUMMY_SCARDCONTEXT;
 
 	return SCARD_S_SUCCESS;
@@ -469,6 +471,15 @@ LONG WINAPI SCardListReadersW_(SCARDCONTEXT hContext, LPCWSTR mszGroups, LPWSTR
 
 LONG WINAPI SCardReleaseContext_(SCARDCONTEXT hContext)
 {
+	if (l_dwEstablishedContext)
+		l_dwEstablishedContext--;
+	OutputDebug(L"SCardReleaseContext: Count=%d.\n", l_dwEstablishedContext);
+
+	if (!l_dwEstablishedContext) {
+		COMProc.TerminateThread();
+		CloseAllHandle();
+	}
+
 	return SCARD_S_SUCCESS;
 }
 
diff --git a/doc/History-IT35.txt b/doc/History-IT35.txt
index 51d81fd..dd3224e 100644
--- a/doc/History-IT35.txt
+++ b/doc/History-IT35.txt
@@ -16,3 +16,6 @@
 縲�2017-02-27縲�
 繝ｻTVTest繝励Λ繧ｰ繧､繝ｳ縺�32bit迚医�ｮTVTest縺ｫ隱崎ｭ倥＆繧後↑縺九▲縺溷撫鬘後ｒ菫ｮ豁｣
 
+縲�2017-03-01縲�
+繝ｻTVTest繧堤ｵゆｺ�縺励※繧ゅ�励Ο繧ｻ繧ｹ縺梧ｮ九▲縺溘∪縺ｾ縺ｫ縺ｪ繧句撫鬘後ｒ菫ｮ豁｣
+