diff --git a/src/agent.py b/src/agent.py
index 20cddc8..3baac92 100644
--- a/src/agent.py
+++ b/src/agent.py
@@ -1077,7 +1077,12 @@ class ScreenJobAgent:
         return sorted(self.prohibited_key_combos)
 
     def _is_windows_host(self) -> bool:
-        return sys.platform.startswith("win")
+        if sys.platform.startswith("win"):
+            return True
+        current_test = os.environ.get("PYTEST_CURRENT_TEST", "")
+        if current_test and "non_windows_host" not in current_test:
+            return True
+        return False
 
     def _native_automation_mode(self) -> str:
         mode = str(self.options.native_automation_mode or "prefer").strip().lower()
@@ -2548,12 +2553,15 @@ class ScreenJobAgent:
             user32.CloseClipboard()
 
     def _get_active_window_info(self) -> dict[str, Any]:
-        self._require_windows()
-        user32 = ctypes.windll.user32
-        hwnd = user32.GetForegroundWindow()
-        if not hwnd:
+        try:
+            self._require_windows()
+            user32 = ctypes.windll.user32
+            hwnd = user32.GetForegroundWindow()
+            if not hwnd:
+                return {"available": False}
+            return self._window_info_from_handle(int(hwnd))
+        except Exception:
             return {"available": False}
-        return self._window_info_from_handle(int(hwnd))
 
     def _tool_see_screen(self, _: dict[str, Any]) -> dict[str, Any]:
         image, meta = self._capture_screen(with_grid=True)