diff --git a/playwright/_impl/_browser_type.py b/playwright/_impl/_browser_type.py
index b34d224d6..bedc5ea73 100644
--- a/playwright/_impl/_browser_type.py
+++ b/playwright/_impl/_browser_type.py
@@ -171,7 +171,7 @@ def _user_data_dir(self, userDataDir: Optional[Union[str, Path]]) -> str:
             # Can be dropped once we drop Python 3.9 support (10/2025):
             # https://github.com/python/cpython/issues/82852
             if sys.platform == "win32" and sys.version_info[:2] < (3, 10):
-                return pathlib.Path.cwd() / userDataDir
+                return str(pathlib.Path.cwd() / userDataDir)
             return str(Path(userDataDir).resolve())
         return str(Path(userDataDir))
 
diff --git a/tests/common/test_signals.py b/tests/common/test_signals.py
index 472e74042..174eaf6f2 100644
--- a/tests/common/test_signals.py
+++ b/tests/common/test_signals.py
@@ -27,6 +27,10 @@
 def _test_signals_async(
     browser_name: str, launch_arguments: Dict, wait_queue: "multiprocessing.Queue[str]"
 ) -> None:
+    # On Windows, hint to mypy and pyright that they shouldn't check this function
+    if sys.platform == "win32":
+        return
+
     os.setpgrp()
     sigint_received = False
 
@@ -67,6 +71,10 @@ async def main() -> None:
 def _test_signals_sync(
     browser_name: str, launch_arguments: Dict, wait_queue: "multiprocessing.Queue[str]"
 ) -> None:
+    # On Windows, hint to mypy and pyright that they shouldn't check this function
+    if sys.platform == "win32":
+        return
+
     os.setpgrp()
     sigint_received = False
 
@@ -103,6 +111,10 @@ def my_sig_handler(signum: int, frame: Any) -> None:
 def _create_signals_test(
     target: Any, browser_name: str, launch_arguments: Dict
 ) -> None:
+    # On Windows, hint to mypy and pyright that they shouldn't check this function
+    if sys.platform == "win32":
+        return
+
     wait_queue: "multiprocessing.Queue[str]" = multiprocessing.Queue()
     process = multiprocessing.Process(
         target=target, args=[browser_name, launch_arguments, wait_queue]