ImportError: DLL load failed on Windows #1018

Jonas1312 · 2019-06-14T11:05:59Z

I have a dll load failed the specified module could not be found error when importing torchvision

PyTorch stable 1.1:

C:\Windows\system32>python -m pip install https://download.pytorch.org/whl/cu100/torch-1.1.0-cp37-cp37m-win_amd64.whl
Collecting torch==1.1.0 from https://download.pytorch.org/whl/cu100/torch-1.1.0-cp37-cp37m-win_amd64.whl
  Using cached https://download.pytorch.org/whl/cu100/torch-1.1.0-cp37-cp37m-win_amd64.whl
Requirement already satisfied: numpy in c:\python37\lib\site-packages (from torch==1.1.0) (1.16.4+mkl)
Installing collected packages: torch
Successfully installed torch-1.1.0

C:\Windows\system32>python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import torch
>>> import torchvision
>>> exit()

Nightly:


C:\Windows\system32>python -m pip install torch_nightly -f https://download.pytorch.org/whl/nightly/cu100/torch_nightly.html
Looking in links: https://download.pytorch.org/whl/nightly/cu100/torch_nightly.html
Collecting torch_nightly
  Using cached https://download.pytorch.org/whl/nightly/cu100/torch_nightly-1.1.0.dev20190612-cp37-cp37m-win_amd64.whl
Installing collected packages: torch-nightly
Successfully installed torch-nightly-1.1.0.dev20190612

C:\Windows\system32>python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import torch
>>> import torchvision
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python37\lib\site-packages\torchvision\__init__.py", line 1, in <module>
    from torchvision import models
  File "C:\Python37\lib\site-packages\torchvision\models\__init__.py", line 11, in <module>
    from . import detection
  File "C:\Python37\lib\site-packages\torchvision\models\detection\__init__.py", line 1, in <module>
    from .faster_rcnn import *
  File "C:\Python37\lib\site-packages\torchvision\models\detection\faster_rcnn.py", line 7, in <module>
    from torchvision.ops import misc as misc_nn_ops
  File "C:\Python37\lib\site-packages\torchvision\ops\__init__.py", line 1, in <module>
    from .boxes import nms, box_iou
  File "C:\Python37\lib\site-packages\torchvision\ops\boxes.py", line 2, in <module>
    from torchvision import _C
ImportError: DLL load failed: La procédure spécifiée est introuvable.
>>>

The text was updated successfully, but these errors were encountered:

Jonas1312 · 2019-06-14T11:06:45Z

Any idea @peterjc123 ?

Edit: found this pytorch/pytorch#21477

peterjc123 · 2019-06-14T16:12:31Z

How did you try to install torchvision?

Jonas1312 · 2019-06-14T16:14:24Z

pip3 install https://download.pytorch.org/whl/cu100/torchvision-0.3.0-cp37-cp37m-win_amd64.whl

Edit:
@peterjc123 BTW, I think windows nightly builds haven't been updated to 1.2.0

Click to expand


torch_nightly-1.1.0.dev20190606-cp37-cp37m-win_amd64.whl
torch_nightly-1.1.0.dev20190607-cp35-cp35m-win_amd64.whl
torch_nightly-1.1.0.dev20190607-cp36-cp36m-win_amd64.whl
torch_nightly-1.1.0.dev20190608-cp35-cp35m-win_amd64.whl
torch_nightly-1.1.0.dev20190608-cp36-cp36m-win_amd64.whl
torch_nightly-1.1.0.dev20190608-cp37-cp37m-win_amd64.whl
torch_nightly-1.1.0.dev20190609-cp35-cp35m-win_amd64.whl
torch_nightly-1.1.0.dev20190609-cp36-cp36m-win_amd64.whl
torch_nightly-1.1.0.dev20190609-cp37-cp37m-win_amd64.whl
torch_nightly-1.1.0.dev20190610-cp35-cp35m-win_amd64.whl
torch_nightly-1.1.0.dev20190610-cp36-cp36m-win_amd64.whl
torch_nightly-1.1.0.dev20190610-cp37-cp37m-win_amd64.whl
torch_nightly-1.1.0.dev20190611-cp35-cp35m-win_amd64.whl
torch_nightly-1.1.0.dev20190611-cp36-cp36m-win_amd64.whl
torch_nightly-1.1.0.dev20190611-cp37-cp37m-win_amd64.whl
torch_nightly-1.1.0.dev20190612-cp35-cp35m-win_amd64.whl
torch_nightly-1.1.0.dev20190612-cp36-cp36m-win_amd64.whl
torch_nightly-1.1.0.dev20190612-cp37-cp37m-win_amd64.whl
torch_nightly-1.2.0.dev20190525-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190525-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190525-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190525-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190525-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190526-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190526-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190526-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190526-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190526-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190527-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190527-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190527-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190527-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190528-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190528-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190528-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190528-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190528-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190529-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190529-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190529-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190529-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190529-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190530-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190530-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190530-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190531-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190531-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190531-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190531-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190531-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190601-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190601-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190601-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190601-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190601-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190602-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190602-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190602-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190602-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190602-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190603-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190603-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190603-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190603-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190603-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190604-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190604-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190604-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190604-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190604-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190605-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190605-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190605-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190605-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190605-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190606-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190606-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190606-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190606-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190606-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190607-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190607-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190607-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190607-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190607-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190608-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190608-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190608-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190608-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190608-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190609-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190609-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190609-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190609-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190609-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190610-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190610-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190610-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190610-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190610-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190611-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190611-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190611-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190611-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190611-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190612-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190612-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190612-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190612-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190612-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190613-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190613-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190613-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190613-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190613-cp37-cp37m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190614-cp27-cp27m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190614-cp27-cp27mu-linux_x86_64.whl
torch_nightly-1.2.0.dev20190614-cp35-cp35m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190614-cp36-cp36m-linux_x86_64.whl
torch_nightly-1.2.0.dev20190614-cp37-cp37m-linux_x86_64.whl

peterjc123 · 2019-06-14T17:05:52Z

@peterjc123 BTW, I think windows nightly builds haven't been updated to 1.2.0

It's nothing special. I'll need to update that in the pytorch/builder repo.

Would you please use something like lucasg/Dependencies to find the missing DLLs?

zemelLeong · 2019-06-15T06:08:16Z

I have same problem
I install torchvision with pip install torchvision

import torchvision
Traceback (most recent call last):
File "", line 1, in
File "G:\Python36\lib\site-packages\torchvision_init_.py", line 1, in
from torchvision import models
File "G:\Python36\lib\site-packages\torchvision\models_init_.py", line 11, in
from . import detection
File "G:\Python36\lib\site-packages\torchvision\models\detection_init_.py", line 1, in
from .faster_rcnn import *
File "G:\Python36\lib\site-packages\torchvision\models\detection\faster_rcnn.py", line 7, in
from torchvision.ops import misc as misc_nn_ops
File "G:\Python36\lib\site-packages\torchvision\ops_init_.py", line 1, in
from .boxes import nms, box_iou
File "G:\Python36\lib\site-packages\torchvision\ops\boxes.py", line 2, in
from torchvision import _C
ImportError: DLL load failed: 找不到指定的模块。

peterjc123 · 2019-06-15T14:21:28Z

I think I know the reason. It's because caffe2 and torch get merged now, so one DLL could not be found anymore. You'll have to rebuild torchvision to fix this.

Jonas1312 · 2019-06-15T15:02:56Z

@peterjc123
I'm not sure if it's exactly what you wanted:

peterjc123 · 2019-06-15T15:05:58Z

@Jonas1312 Not needed anymore. See what I said in the last post.

zemelLeong · 2019-06-23T02:24:22Z

I fixed by this.
https://pytorch.org/get-started/locally/

peterjc123 · 2019-06-23T03:10:18Z

@zemelLeong Yes, installing stable version is also a workground if you don't use pytorch-nightly.

newmluser · 2019-06-29T03:20:12Z

can you please suggest me what is the stable version

zemelLeong · 2019-06-29T03:24:51Z

pip3 install https://download.pytorch.org/whl/cu100/torch-1.1.0-cp36-cp36m-win_amd64.whl
pip3 install https://download.pytorch.org/whl/cu100/torchvision-0.3.0-cp36-cp36m-win_amd64.whl
https://pytorch.org/get-started/locally/

newmluser · 2019-06-29T03:41:18Z

Thank you. I used conda ..

zemelLeong · 2019-06-29T03:57:14Z

cuda10：conda install pytorch torchvision cudatoolkit=10.0 -c pytorch
cuda9：conda install pytorch torchvision cudatoolkit=9.0 -c pytorch
none cuda：conda install pytorch-cpu torchvision-cpu -c pytorch

plammens · 2019-07-03T09:06:17Z

I think I know the reason. It's because caffe2 and torch get merged now, so one DLL could not be found anymore. You'll have to rebuild torchvision to fix this.

So we have to build the latest torchvision from source, as in python setup.py install from master?

fmassa · 2019-07-03T09:13:15Z

@plammens yes, that seems to be the case. But we might need to make some modifications in torchvision so that this works, see #1075

anemes · 2019-08-10T22:04:20Z

I am encountering the same issue with

conda install pytorch torchvision cudatoolkit=10.0 -c pytorch

when I run: from torchvision import datasets, transforms

C:\ProgramData\Anaconda3\lib\site-packages\torchvision\ops\boxes.py in <module>()
      1 import torch
----> 2 from torchvision import _C
      3 
      4 
      5 def nms(boxes, scores, iou_threshold):

ImportError: DLL load failed: The specified module could not be found.

peterjc123 · 2019-08-11T00:42:44Z

@anemes Yes, that's because we didn't upload torchvision 0.4.0 for Windows. I'll tell you when it's ready.

fmassa · 2019-08-12T09:43:10Z

@peterjc123 now that the new Windows binaries are available, can we close this?

peterjc123 · 2019-08-12T09:52:00Z

Yes, please.

colin-byrneireland · 2019-08-19T09:31:27Z

conda install pytorch torchvision cudatoolkit=10.0 -c pytorch worked for me.
I'm using latest version on anconda for windows, thks for th workaround.

AlexLabram · 2019-10-01T09:57:02Z

Contra @fmassa's comment, I'm not seeing any windows binaries for torchvision 0.4.0. As of time of posting, the webpage has wheels for macosx and manylinux only, not win_amd64 (my system), and pip is not having any more luck. So I'm still SOL when it comes to using torchvision.

Apologies if this bug report is the wrong place to raise this; I'm not sure what the etiquette is for dev-ops issues.

Edit: Created new issue for this, since closed issues don't appear on the live issues list.

fmassa · 2019-10-01T13:36:47Z

@AlexLabram wheels are available for windows according to the comments in #1399

AlexTS1980 · 2021-02-02T17:31:38Z

Got this problem with pytorch 1.7.1 and torchvision 0.4.1 and 0.3.0.

mravunni · 2021-02-25T06:48:00Z

same issue Got this problem with pytorch 1.7.1 and torchvision 0.4.1 and 0.3.0.

from torchvision import _C as C
ImportError: DLL load failed: The specified module could not be found.

fmassa added help wanted windows labels Jun 15, 2019

peterjc123 mentioned this issue Jun 15, 2019

Version bump pytorch/builder#315

Merged

fmassa mentioned this issue Jun 28, 2019

Import DLL Error when using import torchvision.transforms #1062

Closed

plammens mentioned this issue Jul 3, 2019

Failed to build from source (nvcc compilation errors) #1076

Closed

Jonas1312 closed this as completed Aug 12, 2019

MerHS mentioned this issue Aug 22, 2019

Unable to run MerHS/tag2pix-gui#1

Closed

AlexLabram mentioned this issue Oct 1, 2019

Torchvision 0.4.0 has no wheels for win_amd64 #1399

Closed

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

ImportError: DLL load failed on Windows #1018

ImportError: DLL load failed on Windows #1018

Jonas1312 commented Jun 14, 2019

Jonas1312 commented Jun 14, 2019 •

edited

Loading

peterjc123 commented Jun 14, 2019

Jonas1312 commented Jun 14, 2019 •

edited

Loading

peterjc123 commented Jun 14, 2019

zemelLeong commented Jun 15, 2019 •

edited

Loading

peterjc123 commented Jun 15, 2019

Jonas1312 commented Jun 15, 2019

peterjc123 commented Jun 15, 2019

zemelLeong commented Jun 23, 2019

peterjc123 commented Jun 23, 2019

newmluser commented Jun 29, 2019

zemelLeong commented Jun 29, 2019

newmluser commented Jun 29, 2019

zemelLeong commented Jun 29, 2019

plammens commented Jul 3, 2019

fmassa commented Jul 3, 2019

anemes commented Aug 10, 2019 •

edited

Loading

peterjc123 commented Aug 11, 2019

fmassa commented Aug 12, 2019

peterjc123 commented Aug 12, 2019

colin-byrneireland commented Aug 19, 2019

AlexLabram commented Oct 1, 2019 •

edited

Loading

fmassa commented Oct 1, 2019

AlexTS1980 commented Feb 2, 2021 •

edited

Loading

mravunni commented Feb 25, 2021

ImportError: DLL load failed on Windows #1018

ImportError: DLL load failed on Windows #1018

Comments

Jonas1312 commented Jun 14, 2019

Jonas1312 commented Jun 14, 2019 • edited Loading

peterjc123 commented Jun 14, 2019

Jonas1312 commented Jun 14, 2019 • edited Loading

peterjc123 commented Jun 14, 2019

zemelLeong commented Jun 15, 2019 • edited Loading

peterjc123 commented Jun 15, 2019

Jonas1312 commented Jun 15, 2019

peterjc123 commented Jun 15, 2019

zemelLeong commented Jun 23, 2019

peterjc123 commented Jun 23, 2019

newmluser commented Jun 29, 2019

zemelLeong commented Jun 29, 2019

newmluser commented Jun 29, 2019

zemelLeong commented Jun 29, 2019

plammens commented Jul 3, 2019

fmassa commented Jul 3, 2019

anemes commented Aug 10, 2019 • edited Loading

peterjc123 commented Aug 11, 2019

fmassa commented Aug 12, 2019

peterjc123 commented Aug 12, 2019

colin-byrneireland commented Aug 19, 2019

AlexLabram commented Oct 1, 2019 • edited Loading

fmassa commented Oct 1, 2019

AlexTS1980 commented Feb 2, 2021 • edited Loading

mravunni commented Feb 25, 2021

Jonas1312 commented Jun 14, 2019 •

edited

Loading

Jonas1312 commented Jun 14, 2019 •

edited

Loading

zemelLeong commented Jun 15, 2019 •

edited

Loading

anemes commented Aug 10, 2019 •

edited

Loading

AlexLabram commented Oct 1, 2019 •

edited

Loading

AlexTS1980 commented Feb 2, 2021 •

edited

Loading