ImportError: DLL load failed with error code 3221225501 tensorflow - tensorflow

Question

I get the above mentioned error code when importing tensorflow the used version is 1.14 in a separate environment the installation is succesful, through pip install in anaconda, windows 7, installing cudam toolkit, but yet unable to import tensorflow successfully
i get this error
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow.py in <module>
57
---> 58 from tensorflow.python.pywrap_tensorflow_internal import *
59 from tensorflow.python.pywrap_tensorflow_internal import __version__
~\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py in <module>
27 return _mod
---> 28 _pywrap_tensorflow_internal = swig_import_helper()
29 del swig_import_helper
~\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py in swig_import_helper()
23 try:
---> 24 _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
25 finally:
~\Anaconda3\lib\imp.py in load_module(name, file, filename, details)
241 else:
--> 242 return load_dynamic(name, filename, file)
243 elif type_ == PKG_DIRECTORY:
~\Anaconda3\lib\imp.py in load_dynamic(name, path, file)
341 name=name, loader=loader, origin=path)
--> 342 return _load(spec)
343
ImportError: DLL load failed with error code 3221225501
During handling of the above exception, another exception occurred:
ImportError Traceback (most recent call last)
<ipython-input-1-64156d691fe5> in <module>
----> 1 import tensorflow as tf
~\Anaconda3\lib\site-packages\tensorflow\__init__.py in <module>
26
27 # pylint: disable=g-bad-import-order
---> 28 from tensorflow.python import pywrap_tensorflow # pylint: disable=unused-import
29 from tensorflow.python.tools import module_util as _module_util
30
~\Anaconda3\lib\site-packages\tensorflow\python\__init__.py in <module>
47 import numpy as np
48
---> 49 from tensorflow.python import pywrap_tensorflow
50
51 # Protocol buffers
~\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow.py in <module>
72 for some common reasons and solutions. Include the entire stack trace
73 above this error message when asking for help.""" % traceback.format_exc()
---> 74 raise ImportError(msg)
75
76 # pylint: enable=wildcard-import,g-import-not-at-top,unused-import,line-too-long
ImportError: Traceback (most recent call last):
File "C:\Users\Neuralserver\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 58, in <module>
from tensorflow.python.pywrap_tensorflow_internal import *
File "C:\Users\Neuralserver\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 28, in <module>
_pywrap_tensorflow_internal = swig_import_helper()
File "C:\Users\Neuralserver\Anaconda3\lib\site-packages\tensorflow\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
_mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
File "C:\Users\Neuralserver\Anaconda3\lib\imp.py", line 242, in load_module
return load_dynamic(name, filename, file)
File "C:\Users\Neuralserver\Anaconda3\lib\imp.py", line 342, in load_dynamic
return _load(spec)
ImportError: DLL load failed with error code 3221225501

Answer 1

Try to access after installing proper CUDA Reference 1, Reference 2

Answer 2

I encountered this error while installing Tensorflow 2.x in a conda environment without CUDA on windows 7.
Ultimately, I managed to install Tensorflow as part of setting up a new conda environment. This was my environment file which managed the install:
# This file defines a conda environment.
# Run as: conda env create -f dev_environment.yml
# Remove old environment using: conda env remove --name dev
name: dev
channels:
- conda-forge
dependencies:
- python=3.7
- notebook
- numpy
- pandas
- tensorflow-mkl=2.1 # <-
- tensorflow-estimator==2.1 # <- (Needed to avoid AttributeError)
I also installed the Microsoft Visual C++ Redistributable, as mentioned in the installation docs as part of my search to get things workings, but I am unsure whether this is vital or not.
Some further remarks:
At the time of writing, tensorflow 2.2 was already available on conda, but gave a AttributeError when importing
Using pip always gave the error described by OP (pip install tensorflow or pip install tensorflow-cpu). I am unsure what the difference is between the pip and conda versions.
Tensorflow hardware requirements mention TF uses AVX cpu instructions starting from version 1.6. However, I was able to install TF using the above method on a machine with an intel i9 cpu, which does not support AVX instructions.