Napari viewier fails on native windows installation

[popjell]

When trying to open the Napari image viewer in a native windows installation of openhcs, the napari viewier opens but no images are streamed to it. The following error is thrown:

Traceback (most recent call last):
  File "C:\Users\jatha\Desktop\openHCSTest\Lib\site-packages\openhcs\io\filemanager.py", line 199, in save_batch
    backend_instance.save_batch(data_list, output_paths, **kwargs)
  File "C:\Users\jatha\Desktop\openHCSTest\Lib\site-packages\openhcs\io\napari_stream.py", line 78, in save_batch
    publisher = self._get_publisher(host, port, transport_mode)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\jatha\Desktop\openHCSTest\Lib\site-packages\openhcs\io\streaming.py", line 70, in _get_publisher
    url = get_zmq_transport_url(port, transport_mode, host)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\jatha\Desktop\openHCSTest\Lib\site-packages\openhcs\runtime\zmq_base.py", line 114, in get_zmq_transport_url
    raise ValueError(
ValueError: IPC transport mode is not supported on Windows. Windows does not support Unix domain sockets. Use TransportMode.TCP instead, or use get_default_transport_mode() to automatically select the correct mode for the platform.
2025-11-19 22:30:21,602 - openhcs.pyqt_gui.widgets.image_browser - ERROR - Failed to load/stream batch to Napari: Failed to save batch of 1 files using backend 'napari_stream'

In "openhcs\io\napari_stream.py", transport_mode to be swapped to use the get_default_transport_mode() function rather than hard coding TCP.

[trissim]

that's weird it should be getting the transport mode from the resovled LazyNapariStreamingConfig on the steps during compilation. Does FIJI have the same issue?

[popjell]

Trying

that's weird it should be getting the transport mode from the resovled LazyNapariStreamingConfig on the steps during compilation. Does FIJI have the same issue?

Fiji isnt working on either WSL or native windows for me, I am getting this error;

2025-11-21 20:17:54,294 - openhcs.pyqt_gui.widgets.shared.zmq_server_manager - INFO - Unregistered launching viewer on port 5565 (now ready)
QMetaObject::invokeMethod: No such method ZMQServerManagerWidget::refresh_servers()
QMetaObject::invokeMethod: No such method ZMQServerManagerWidget::refresh_servers()
2025-11-21 20:17:54,294 - openhcs.pyqt_gui.widgets.image_browser - ERROR - Failed to load/stream batch to Fiji: Fiji viewer on port 5565 failed to become ready

This might be due to something on my end since I remember it was working on the lab computer. For napari, however, it works on WSL but not native windows