diff --git a/doc/changelog.d/4670.fixed.md b/doc/changelog.d/4670.fixed.md
new file mode 100644
index 000000000000..4e58294182a1
--- /dev/null
+++ b/doc/changelog.d/4670.fixed.md
@@ -0,0 +1 @@
+Pop up window for launch fluent.
diff --git a/src/ansys/fluent/core/launcher/launcher_utils.py b/src/ansys/fluent/core/launcher/launcher_utils.py
index 4bcf0b19921b..fca18630af05 100644
--- a/src/ansys/fluent/core/launcher/launcher_utils.py
+++ b/src/ansys/fluent/core/launcher/launcher_utils.py
@@ -106,9 +106,12 @@ def _get_subprocess_kwargs_for_fluent(env: Dict[str, Any], argvals) -> Dict[str,
             stderr=pyfluent.config.launch_fluent_stderr,
         )
     if is_windows():
-        kwargs.update(shell=True, creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
+        kwargs.update(
+            creationflags=subprocess.CREATE_NEW_PROCESS_GROUP
+            | subprocess.CREATE_NO_WINDOW
+        )
     else:
-        kwargs.update(shell=True, start_new_session=True)
+        kwargs.update(start_new_session=True)
     fluent_env = os.environ.copy()
     fluent_env.update({k: str(v) for k, v in env.items()})
     fluent_env["REMOTING_THROW_LAST_TUI_ERROR"] = "1"
diff --git a/src/ansys/fluent/core/launcher/standalone_launcher.py b/src/ansys/fluent/core/launcher/standalone_launcher.py
index e30128bfd320..fc06ae0da792 100644
--- a/src/ansys/fluent/core/launcher/standalone_launcher.py
+++ b/src/ansys/fluent/core/launcher/standalone_launcher.py
@@ -236,14 +236,7 @@ def __init__(
         )
 
         if is_windows():
-            if (
-                pyfluent.config.launch_fluent_stdout
-                or pyfluent.config.launch_fluent_stderr
-            ):
-                self._launch_cmd = self._launch_string
-            else:
-                # Using 'start.exe' is better; otherwise Fluent is more susceptible to bad termination attempts.
-                self._launch_cmd = 'start "" ' + self._launch_string
+            self._launch_cmd = self._launch_string
         else:
             if self.argvals["ui_mode"] not in [UIMode.GUI, UIMode.HIDDEN_GUI]:
                 # Using nohup to hide Fluent output from the current terminal
@@ -257,7 +250,6 @@ def __call__(self):
             return self._launch_string, self._server_info_file_name
         try:
             logger.debug(f"Launching Fluent with command: {self._launch_cmd}")
-
             process = subprocess.Popen(self._launch_cmd, **self._kwargs)
 
             try: