diff --git a/src/anyio/_backends/_selector_thread.py b/src/anyio/_backends/_selector_thread.py
index 7bc2c7dd..10635fe1 100644
--- a/src/anyio/_backends/_selector_thread.py
+++ b/src/anyio/_backends/_selector_thread.py
@@ -309,6 +309,7 @@ def _close_selector_and_loop() -> None:
         asyncio_loop.close = loop_close  # type: ignore[method-assign]
         _selectors.pop(asyncio_loop, None)
         selector_thread.close()
+        asyncio_loop.close()
 
     asyncio_loop.close = _close_selector_and_loop  # type: ignore[method-assign]
 
diff --git a/tests/test_sockets.py b/tests/test_sockets.py
index 971b1f2a..0e0f794e 100644
--- a/tests/test_sockets.py
+++ b/tests/test_sockets.py
@@ -1853,9 +1853,6 @@ async def test_connect_tcp_getaddrinfo_context() -> None:
 
 
 async def test_wait_socket_readable(anyio_backend_name: str) -> None:
-    if anyio_backend_name == "trio" and platform.system() == "Windows":
-        pytest.skip("Internal error in Trio")
-
     def client(port: int) -> None:
         with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
             sock.connect(("127.0.0.1", port))