Please help me install isaac lab

I have been trying to install isaaclab on windows for the past few days and i always end up with the same error everytime. conflicting packages while installing and dll load error while running import h5py

i followed pip installation https://isaac-sim.github.io/IsaacLab/main/source/setup/installation/pip_installation.html here

i installed recommended nvidia driver, installed vc tools C++ dev, added long path, but still end up with the same error over and over again. Please help

while executing

pip install “isaacsim[all,extscache]==5.1.0” –extra-index-url https://pypi.nvidia.com

ERROR: pip’s dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.

wheel 0.46.3 requires packaging>=24.0, but you have packaging 23.0 which is incompatible.

while executing

isaaclab.bat –install

ERROR: pip’s dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.

isaacsim-core 5.1.0.0 requires torchaudio==2.7.0, which is not installed.

Error while running Isaaclab

2026-03-16T20:21:21Z [17,945ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module isaaclab_tasks. Error: DLL load failed while importing _errors: The specified procedure could not be found.. Traceback:

Traceback (most recent call last):

File “D:conda_envsenv_isaaclabLibsite-packagesisaacsimkitkernelpyomniext_implcustom_importer.py”, line 85, in import_module

return importlib.import_module(name)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File “D:conda_envsenv_isaaclabLibimportlib__init__.py”, line 126, in import_module

return _bootstrap._gcd_import(name[level:], package, level)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File “<frozen importlib._bootstrap>”, line 1204, in _gcd_import

File “<frozen importlib._bootstrap>”, line 1176, in _find_and_load

File “<frozen importlib._bootstrap>”, line 1147, in _find_and_load_unlocked

File “<frozen importlib._bootstrap>”, line 690, in _load_unlocked

File “<frozen importlib._bootstrap_external>”, line 940, in exec_module

File “<frozen importlib._bootstrap>”, line 241, in _call_with_frames_removed

File “d:/isaaclab/source/isaaclab_tasks/isaaclab_tasks/__init__.py”, line 33, in <module>

from .utils import import_packages

File “d:/isaaclab/source/isaaclab_tasks/isaaclab_tasks/utils/__init__.py”, line 9, in <module>

from .parse_cfg import get_checkpoint_path, load_cfg_from_registry, parse_env_cfg

File “d:/isaaclab/source/isaaclab_tasks/isaaclab_tasks/utils/parse_cfg.py”, line 17, in <module>

from isaaclab.envs import DirectRLEnvCfg, ManagerBasedRLEnvCfg

File “d:/isaaclab/source/isaaclab/isaaclab/envs/__init__.py”, line 45, in <module>

from . import mdp, ui

File “d:/isaaclab/source/isaaclab/isaaclab/envs/mdp/__init__.py”, line 18, in <module>

from .actions import * # noqa: F401, F403

^^^^^^^^^^^^^^^^^^^^^^

File “d:/isaaclab/source/isaaclab/isaaclab/envs/mdp/actions/__init__.py”, line 8, in <module>

from .actions_cfg import *

File “d:/isaaclab/source/isaaclab/isaaclab/envs/mdp/actions/actions_cfg.py”, line 9, in <module>

from isaaclab.managers.action_manager import ActionTerm, ActionTermCfg

File “d:/isaaclab/source/isaaclab/isaaclab/managers/__init__.py”, line 31, in <module>

from .recorder_manager import DatasetExportMode, RecorderManager, RecorderManagerBaseCfg, RecorderTerm

File “d:/isaaclab/source/isaaclab/isaaclab/managers/recorder_manager.py”, line 18, in <module>

from isaaclab.utils.datasets import EpisodeData, HDF5DatasetFileHandler

File “d:/isaaclab/source/isaaclab/isaaclab/utils/datasets/__init__.py”, line 17, in <module>

from .hdf5_dataset_file_handler import HDF5DatasetFileHandler

File “d:/isaaclab/source/isaaclab/isaaclab/utils/datasets/hdf5_dataset_file_handler.py”, line 15, in <module>

import h5py

File “D:conda_envsenv_isaaclabLibsite-packagesh5py__init__.py”, line 25, in <module>

from . import _errors

ImportError: DLL load failed while importing _errors: The specified procedure could not be found.

2026-03-16T20:21:21Z [17,946ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: ‘isaaclab_tasks’ in ‘d:isaaclabsourceisaaclab_tasks’ failed to load.

At:

D:conda_envsenv_isaaclabLibsite-packagesisaacsimkitkernelpyomniext_impl_internal.py(222): startup

D:conda_envsenv_isaaclabLibsite-packagesisaacsimkitkernelpyomniext_impl_internal.py(337): startup_extension

PythonExtension.cpp::startup()(2): <module>

D:conda_envsenv_isaaclabLibsite-packagesisaacsimextsisaacsim.simulation_appisaacsimsimulation_appsimulation_app.py(534): _start_app

D:conda_envsenv_isaaclabLibsite-packagesisaacsimextsisaacsim.simulation_appisaacsimsimulation_appsimulation_app.py(270): __init__

D:IsaacLabsourceisaaclabisaaclabappapp_launcher.py(823): _create_app

D:IsaacLabsourceisaaclabisaaclabappapp_launcher.py(131): __init__

D:IsaacLabscriptstutorials0_simcreate_empty.py(29): <module>

2026-03-16T20:21:21Z [17,946ms] [Error] [omni.ext.plugin] [ext: isaaclab_tasks-0.11.14] Failed to startup python extension.