diff --git a/text/pyopenjtalk_worker/__init__.py b/text/pyopenjtalk_worker/__init__.py
index 3fd9971..8a10266 100644
--- a/text/pyopenjtalk_worker/__init__.py
+++ b/text/pyopenjtalk_worker/__init__.py
@@ -74,8 +74,11 @@ def initialize(port: int = WOKER_PORT):
         args = [sys.executable, "-m", worker_pkg_path, "--port", str(port)]
         # new session, new process group
         if sys.platform.startswith("win"):
-            cf = subprocess.DETACHED_PROCESS | subprocess.CREATE_NEW_PROCESS_GROUP  # type: ignore
-            subprocess.Popen(args, creationflags=cf)
+            cf = subprocess.CREATE_NEW_CONSOLE | subprocess.CREATE_NEW_PROCESS_GROUP  # type: ignore
+            si = subprocess.STARTUPINFO()  # type: ignore
+            si.dwFlags |= subprocess.STARTF_USESHOWWINDOW  # type: ignore
+            si.wShowWindow = subprocess.SW_HIDE  # type: ignore
+            subprocess.Popen(args, creationflags=cf, startupinfo=si)
         else:
             # align with Windows behavior
             # start_new_session is same as specifying setsid in preexec_fn
@@ -107,7 +110,7 @@ def terminate():
 
     # repare for unexpected errors
     try:
-        if WORKER_CLIENT.status().get("client-count") == 1:
+        if WORKER_CLIENT.status() == 1:
             WORKER_CLIENT.quit_server()
     except Exception as e:
         logger.error(e)
diff --git a/text/pyopenjtalk_worker/worker_client.py b/text/pyopenjtalk_worker/worker_client.py
index 23f7dbe..86d8969 100644
--- a/text/pyopenjtalk_worker/worker_client.py
+++ b/text/pyopenjtalk_worker/worker_client.py
@@ -38,9 +38,18 @@ class WorkerClient:
         return response.get("return")
 
     def status(self):
-        send_data(self.sock, {"request-type": RequestType.STATUS})
-        return receive_data(self.sock)
+        data = {"request-type": RequestType.STATUS}
+        logger.trace(f"client sends request: {data}")
+        send_data(self.sock, data)
+        logger.trace("client sent request successfully")
+        response = receive_data(self.sock)
+        logger.trace(f"client received response: {response}")
+        return response.get("client-count")
 
     def quit_server(self):
-        send_data(self.sock, {"request-type": RequestType.QUIT_SERVER})
-        receive_data(self.sock)
+        data = {"request-type": RequestType.QUIT_SERVER}
+        logger.trace(f"client sends request: {data}")
+        send_data(self.sock, data)
+        logger.trace("client sent request successfully")
+        response = receive_data(self.sock)
+        logger.trace(f"client received response: {response}")