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%matplotlib magic causes "ImportError: DLL load failed while importing" with jax and Windows 11 #15153
ImportError: DLL load failed while importing _jax: A dynamic link library (DLL) initialization routine failed.
Specific error line from stacktrace: File ...\jaxlib\xla_client.py:28: from jaxlib import _jax as _xla
Full stacktrace
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
Cell In[1], line 3
1 get_ipython().run_line_magic("matplotlib", "qt5") # noqa: F821
----> 3 import jax
File C:\...\Lib\site-packages\jax\__init__.py:25
22 from jax.version import __version_info__ as __version_info__
24 # Set Cloud TPU env vars if necessary before transitively loading C++ backend
---> 25 from jax._src.cloud_tpu_init import cloud_tpu_init as _cloud_tpu_init
26 try:
27 _cloud_tpu_init()
File C:\...\Lib\site-packages\jax\_src\cloud_tpu_init.py:20
17 import re
18 import warnings
---> 20 from jax._src import config
21 from jax._src import hardware_utils
23 running_in_cloud_tpu_vm: bool = False
File C:\...\Lib\site-packages\jax\_src\config.py:29
26 import warnings
28 from jax._src import deprecations
---> 29 from jax._src import logging_config
30 from jax._src.lib import _jax
31 from jax._src.lib import guard_lib
File C:\...\Lib\site-packages\jax\_src\logging_config.py:17
15 import logging
16 import sys
---> 17 from jax._src.lib import utils
19 # Example log message:
20 # DEBUG:2023-06-07 00:14:40,280:jax._src.xla_bridge:590: Initializing backend 'cpu'
21 logging_formatter = logging.Formatter(
22 "{levelname}:{asctime}:{name}:{lineno}: {message}", style='{')
File C:\...\Lib\site-packages\jax\_src\lib\__init__.py:89
86 import jaxlib.cpu_feature_guard as cpu_feature_guard
87 cpu_feature_guard.check_cpu_features()
---> 89 import jaxlib.xla_client as xla_client # noqa: F401
91 # Jaxlib code is split between the Jax and the XLA repositories.
92 # Only for the internal usage of the JAX developers, we expose a version
93 # number that can be used to perform changes without breaking the main
94 # branch on the Jax github.
95 jaxlib_extension_version: int = getattr(xla_client, '_version', 0)
File C:\...\Lib\site-packages\jaxlib\xla_client.py:28
25 import threading
26 from typing import Any, Protocol, Union
---> 28 from jaxlib import _jax as _xla
30 # Note this module does *not* depend on any Python protocol buffers. The XLA
31 # Python bindings are currently packaged both as part of jaxlib and as part
32 # of TensorFlow. If we use protocol buffers here, then importing both jaxlib
(...) 39 # Pylint has false positives for type annotations.
40 # pylint: disable=invalid-sequence-index
42 ifrt_programs = _xla.ifrt_programs
ImportError: DLL load failed while importing _jax: A dynamic link library (DLL) initialization routine failed.
Packages/environment:
OS: Windows 11
IPython: 9.7.0
matplotlib: 3.10.8
jax: 0.9.1
Other context
Without the matplotlib magic, the import works just fine:
Activity
ethan-tau commentedon Mar 10, 2026
I suspect that the root cause lies upstream of IPython itself, but would appreciate a pointer as to how to root-cause.