diff --git a/scripts/execute.py b/scripts/execute.py
index 482997d..e5219c2 100644
--- a/scripts/execute.py
+++ b/scripts/execute.py
@@ -251,15 +251,9 @@ class StepExecutor:
             sys.exit(1)
 
         prompt = preamble + step_file.read_text(encoding="utf-8")
-        command = ["codex", "exec"]
-        if os.name == "nt":
-            command.extend([
-                "-c",
-                'windows.sandbox="unelevated"',
-                "-c",
-                "windows.sandbox_private_desktop=false",
-            ])
-        command.extend([
+        command = [
+            "codex",
+            "exec",
             "--json",
             "--sandbox",
             "workspace-write",
@@ -267,7 +261,7 @@ class StepExecutor:
             "--cd",
             self._root,
             "-",
-        ])
+        ]
         try:
             result = subprocess.run(
                 command,
diff --git a/tests/test_execute.py b/tests/test_execute.py
index 03b58c8..108354b 100644
--- a/tests/test_execute.py
+++ b/tests/test_execute.py
@@ -34,14 +34,6 @@ def test_invoke_codex_uses_utf8_for_unicode_prompt(tmp_path, monkeypatch):
 
     assert "Euler–Bernoulli 보" in invocation["kwargs"]["input"]
     assert invocation["kwargs"]["encoding"] == "utf-8"
-    if execute.os.name == "nt":
-        configs = [
-            invocation["command"][index + 1]
-            for index, argument in enumerate(invocation["command"][:-1])
-            if argument == "-c"
-        ]
-        assert 'windows.sandbox="unelevated"' in configs
-        assert "windows.sandbox_private_desktop=false" in configs
 
 
 def test_run_git_decodes_output_as_utf8(tmp_path, monkeypatch):