Hello,
I'm stuck with the error in the title and tried a lot of things to get rid of it. I hope, I'm in the right place because cryptography is "only" used as dependency in another module (requests_ntlm2). When I run the code from powershell (python myscript.py) it runs fine. But when I use the same code to run it as a Windows service (pywin32) I get always the traceback shown later.
Environment:
- I run the powershell as the same user than is configured for the Windows service (it's an account in ActiveDirectory, no local account)
- Windows Server 2016 (german)
- Python 3.10.11
- All packages are globally installed with pip as administrator
I've uninstalled already cryptography and its dependencies but no change after reinstall (postinstall-script for pywin32 executed several times). I've compared environment-variables in both cases and found only minor differences (see screenshot). I've imported other modules without any problems (e. g. requests). I've also played around with different PYTHONPATH-variations, but I don't know where the DLL should be (the other modules seem to be found as seen in the Traceback). I also found Issue 7836 but it contains no hint, where else I could look.
Code which forces the error:
from requests_ntlm2 import (
HttpNtlmAuth,
HttpNtlmAdapter,
NtlmCompatibility
)
Traceback:
Python could not import the service's module
Traceback (most recent call last):
File "C:\OutputFactory\Skripte\OutputFactory.Infinica.Error_Monitoring_Service\pyWinService.py", line 10, in <module>
import ServiceWorkerImpl
File "C:\OutputFactory\Skripte\OutputFactory.Infinica.Error_Monitoring_Service\ServiceWorkerImpl.py", line 7, in <module>
from requests_ntlm2 import (
File "C:\Program Files\Python310\lib\site-packages\requests_ntlm2\__init__.py", line 1, in <module>
from .adapters import HttpNtlmAdapter, HttpProxyAdapter
File "C:\Program Files\Python310\lib\site-packages\requests_ntlm2\adapters.py", line 8, in <module>
from .connection import DEFAULT_HTTP_VERSION
File "C:\Program Files\Python310\lib\site-packages\requests_ntlm2\connection.py", line 12, in <module>
from .core import NtlmCompatibility, get_ntlm_credentials, noop
File "C:\Program Files\Python310\lib\site-packages\requests_ntlm2\core.py", line 8, in <module>
from cryptography import x509
File "C:\Program Files\Python310\lib\site-packages\cryptography\x509\__init__.py", line 7, in <module>
from cryptography.x509 import certificate_transparency
File "C:\Program Files\Python310\lib\site-packages\cryptography\x509\certificate_transparency.py", line 11, in <module>
from cryptography.hazmat.bindings._rust import x509 as rust_x509
ImportError: DLL load failed while importing _rust: Das angegebene Modul wurde nicht gefunden.
%2: %3
Packages
PS C:\> python -m pip list -v
Package Version Location Installer
------------------ --------- -------------------------------------------- ---------
asttokens 2.2.1 c:\program files\python310\lib\site-packages pip
backcall 0.2.0 c:\program files\python310\lib\site-packages pip
certifi 2023.7.22 c:\program files\python310\lib\site-packages pip
cffi 1.15.1 c:\program files\python310\lib\site-packages pip
charset-normalizer 3.2.0 c:\program files\python310\lib\site-packages pip
colorama 0.4.6 c:\program files\python310\lib\site-packages pip
cryptography 41.0.3 c:\program files\python310\lib\site-packages pip
decorator 5.1.1 c:\program files\python310\lib\site-packages pip
executing 1.2.0 c:\program files\python310\lib\site-packages pip
idna 3.4 c:\program files\python310\lib\site-packages pip
ipython 8.14.0 c:\program files\python310\lib\site-packages pip
jedi 0.19.0 c:\program files\python310\lib\site-packages pip
matplotlib-inline 0.1.6 c:\program files\python310\lib\site-packages pip
ntlm-auth 1.5.0 c:\program files\python310\lib\site-packages pip
parso 0.8.3 c:\program files\python310\lib\site-packages pip
pickleshare 0.7.5 c:\program files\python310\lib\site-packages pip
pip 23.2.1 c:\program files\python310\lib\site-packages pip
prompt-toolkit 3.0.39 c:\program files\python310\lib\site-packages pip
pure-eval 0.2.2 c:\program files\python310\lib\site-packages pip
pycparser 2.21 c:\program files\python310\lib\site-packages pip
Pygments 2.16.1 c:\program files\python310\lib\site-packages pip
PyMuPDF 1.22.5 c:\program files\python310\lib\site-packages pip
pyodbc 4.0.39 c:\program files\python310\lib\site-packages pip
pywin32 306 c:\program files\python310\lib\site-packages pip
requests 2.31.0 c:\program files\python310\lib\site-packages pip
requests-ntlm2 6.5.3 c:\program files\python310\lib\site-packages pip
setuptools 68.1.0 c:\program files\python310\lib\site-packages pip
six 1.16.0 c:\program files\python310\lib\site-packages pip
stack-data 0.6.2 c:\program files\python310\lib\site-packages pip
traitlets 5.9.0 c:\program files\python310\lib\site-packages pip
urllib3 2.0.4 c:\program files\python310\lib\site-packages pip
wcwidth 0.2.6 c:\program files\python310\lib\site-packages pip
Environment-variables (left side run as Windows service, right side started directly from Powershell)
Any tip what I'm doing wrong?
Best regards
Steffen
Hello,
I'm stuck with the error in the title and tried a lot of things to get rid of it. I hope, I'm in the right place because cryptography is "only" used as dependency in another module (requests_ntlm2). When I run the code from powershell (python myscript.py) it runs fine. But when I use the same code to run it as a Windows service (pywin32) I get always the traceback shown later.
Environment:
I've uninstalled already cryptography and its dependencies but no change after reinstall (postinstall-script for pywin32 executed several times). I've compared environment-variables in both cases and found only minor differences (see screenshot). I've imported other modules without any problems (e. g. requests). I've also played around with different PYTHONPATH-variations, but I don't know where the DLL should be (the other modules seem to be found as seen in the Traceback). I also found Issue 7836 but it contains no hint, where else I could look.
Code which forces the error:
Traceback:
Packages
Environment-variables (left side run as Windows service, right side started directly from Powershell)
Any tip what I'm doing wrong?
Best regards
Steffen