Does not launch after installing with pip on windows11

[sodiumnitrate]

Provide environment information

(labelme_env) PS C:\Users\irema> python --version
Python 3.12.9
(labelme_env) PS C:\Users\irema> python -m pip list
Package            Version
------------------ -----------
annotated-types    0.7.0
beautifulsoup4     4.13.3
certifi            2025.1.31
charset-normalizer 3.4.1
click              8.1.8
colorama           0.4.6
coloredlogs        15.0.1
contourpy          1.3.1
cycler             0.12.1
filelock           3.18.0
flatbuffers        25.2.10
fonttools          4.56.0
gdown              5.2.0
humanfriendly      10.0
idna               3.10
imageio            2.37.0
imgviz             1.7.6
kiwisolver         1.4.8
labelme            5.8.0
lazy_loader        0.4
loguru             0.7.3
matplotlib         3.10.1
mpmath             1.3.0
natsort            8.4.0
networkx           3.4.2
numpy              2.2.4
onnxruntime        1.21.0
onnxruntime-gpu    1.21.0
osam               0.2.3
packaging          24.2
pillow             11.1.0
pip                25.0.1
protobuf           6.30.1
pydantic           2.10.6
pydantic_core      2.27.2
pyparsing          3.2.1
PyQt5              5.15.11
PyQt5-Qt5          5.15.2
PyQt5_sip          12.17.0
pyreadline3        3.5.4
PySocks            1.7.1
python-dateutil    2.9.0.post0
PyYAML             6.0.2
QtPy               2.4.3
requests           2.32.3
scikit-image       0.25.2
scipy              1.15.2
six                1.17.0
soupsieve          2.6
sympy              1.13.3
termcolor          2.5.0
tifffile           2025.3.13
tqdm               4.67.1
typing_extensions  4.12.2
urllib3            2.3.0
win32_setctime     1.2.0

What OS are you using?

Windows 11 Pro 10.0.26100

Describe the Bug

I'm using powershell on windows 11. I do the following:

python -m venv labelme_env
.\labelme_env\Scripts\activate
pip install labelme
python -m labelme

and this is the output:

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\Users\irema\labelme_env\Lib\site-packages\labelme\__main__.py", line 15, in <module>
    from labelme.app import MainWindow
  File "C:\Users\irema\labelme_env\Lib\site-packages\labelme\app.py", line 21, in <module>
    from labelme._automation import bbox_from_text
  File "C:\Users\irema\labelme_env\Lib\site-packages\labelme\_automation\bbox_from_text.py", line 6, in <module>
    import osam
    from . import apis  # noqa: F401
    ^^^^^^^^^^^^^^^^^^
  File "C:\Users\irema\labelme_env\Lib\site-packages\osam\apis.py", line 5, in <module>
    import onnxruntime
  File "C:\Users\irema\labelme_env\Lib\site-packages\onnxruntime\__init__.py", line 61, in <module>
    raise import_capi_exception
  File "C:\Users\irema\labelme_env\Lib\site-packages\onnxruntime\__init__.py", line 24, in <module>
    from onnxruntime.capi._pybind_state import (
  File "C:\Users\irema\labelme_env\Lib\site-packages\onnxruntime\capi\_pybind_state.py", line 32, in <module>
    from .onnxruntime_pybind11_state import *  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: DLL load failed while importing onnxruntime_pybind11_state: A dynamic link library (DLL) initialization routine failed.

Expected Behavior

The GUI to launch.

To Reproduce

No response

[hakiKhuva]

I'm also facing the same issue, using the Windows 10 and Python 3.11.9

[S-TE11A]

pip install onnxruntime==1.19.0 works on me.

[hakiKhuva]

pip install onnxruntime==1.19.0 worked for me 🥳

[wkentaro]

I tested on Windows 11 + Anaconda fresh install with pip install labelme==5.8.1:

• ✅ py39: Python 3.9: onnxruntime 1.19.2
• ✅ py310: Python 3.10: onnxruntime 1.21.0
• ✅ py311: Python 3.11: onnxruntime 1.21.0
• ✅ py312: Python 3.12: onnxruntime 1.21.0

But, I reproduced in my Conda base environment, so likely there's some conflicts in dependencies.

• ❌️ base: Python 3.12: onnxruntime 1.21.0

[S-TE11A]

I tested on Windows 11 + Anaconda fresh install with pip install labelme==5.8.1:

• ✅ py39: Python 3.9: onnxruntime 1.19.2
• ✅ py310: Python 3.10: onnxruntime 1.21.0
• ✅ py311: Python 3.11: onnxruntime 1.21.0
• ✅ py312: Python 3.12: onnxruntime 1.21.0

But, I reproduced in my Conda base environment, so likely there's some conflicts in dependencies.

• ❌️ base: Python 3.12: onnxruntime 1.21.0

maybe its related to microsoft/onnxruntime#21005, but Im not really sure how it plays a role in it.

[clouds56]

The PyQt5 would introduce its own msvcp140.dll at .venv\Lib\site-packages\PyQt5\Qt5\bin\msvcp140.dll. Which doesn't work well with onnxruntime.

This would fail

from PyQt5 import QtCore
import onnxruntime

This works

import onnxruntime
from PyQt5 import QtCore

[wkentaro]

@clouds56 thanks for the share. i'll try if it would also work in my environment.

[clouds56]

I locally add import onnxruntime at head of __init__.py and it works.

[wkentaro]

I got the same error even if I moved the onnxruntime import.

[hakiKhuva]

I got the same error even if I moved the onnxruntime import.

🤔 because you've changed __main__.py.

As per the comment, adding the onnxruntime import at the beginning of __init__.py makes it work.

Additionally, adding the onnxruntime import before the line from labelme.label_file import LabelFile works as expected, while adding it after that raises an error.

[sheex2018]

I tested on Windows 11 + Anaconda fresh install with pip install labelme==5.8.1:

• ✅ py39: Python 3.9: onnxruntime 1.19.2
• ✅ py310: Python 3.10: onnxruntime 1.21.0
• ✅ py311: Python 3.11: onnxruntime 1.21.0
• ✅ py312: Python 3.12: onnxruntime 1.21.0

But, I reproduced in my Conda base environment, so likely there's some conflicts in dependencies.

• ❌️ base: Python 3.12: onnxruntime 1.21.0

So do I.
Python 3.11+ Conda : onnxruntime 1.22.1