paramiko ImportError: DLL load failed: The operating system cannot run %1

Question

I downloaded Anaconda for python usages on windows. I'm using paramiko module for SSH. When i try to do SSH connect using paramiko, i'm getting following error,

Traceback (most recent call last):
File "C:\Users\Anaconda2\lib\site-packages\paramiko\transport.py", line 545, in start_client
raise e
ImportError: DLL load failed: The operating system cannot run %1.

I tried setting "C:\Users\*****\Anaconda2\Library\bin" path to the environmental variable. But no use in it. Still the error continuous.

Code snippet:

import paramiko
sftpSession = None
sshSession = paramiko.SSHClient()
sshSession.set_missing_host_key_policy(paramiko.AutoAddPolicy())
sshSession.connect(hostname=hostname,username=username,password=password,timeout=2)

Show us [paramiko log file](https://stackoverflow.com/q/27587716/850848) — Martin Prikryl, Dec 28 '17 at 09:26
It seems that you are missing OpenSSL DLLs `libeay32.dll` and ssleay32.dll` (though in my installation of Python, I do not need them, as the SSL in built-into the Python, but you may have some special Python. I do not know Anaconda). — Martin Prikryl, Dec 28 '17 at 10:49
in my case it was a second python install, that my IDE prefered. But Paramiko was installed in the second python path... better keep your environment tidy — transistor, Apr 05 '18 at 11:29

score 5 · Accepted Answer · answered Dec 29 '17 at 09:54

5

I uninstalled and reinstalled cryptography package with latest version. Now, SSH connect is working without any errors.

pip uninstall cryptography

pip install cryptography

answered Dec 29 '17 at 09:54

Anand

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This worked for me. Now when I run import paramiko, I don't get that DDL error. Thanks! – Andrew Hicks Dec 14 '20 at 05:21

score 1 · Answer 2 · edited Dec 28 '17 at 11:10

1

Found some advice in here:

Create a new conda environment (i.e.: conda create -n paramiko-env python=3)
Activate the environment (activate paramiko-env)
Run: conda install -c conda-forge paramiko maybe you can try it

edited Dec 28 '17 at 11:10

eyllanesc

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answered Dec 28 '17 at 08:58

johnII

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Thks for your advice :) – Anand Dec 29 '17 at 09:55

paramiko ImportError: DLL load failed: The operating system cannot run %1

2 Answers2