[Python] Python: ImportError: DLL load failed while importing _rust: The specified module...

I'm getting that error any time that the following is executed from a Python script:

from cryptography.hazmat.bindings._rust import <whatever>


I look at the file structure for my ...\site-packages\cryptography\hazmat\bindings and see:

<DIR> __pycache__
<DIR> _rust
<DIR> openssl
__init__.py
_rust.pyd


So, there is a _rust directory, but no _rust.py file. Is the _rust folder the _rust python module? Or am I missing the _rust module?

In that _rust folder there is a __init__.pyi file. I try doing:

import cryptography.hazmat.bindings._rust.__init__.pyi


and obtain the same "DLL load failed while importing _rust" error.

Google AI tells me:

The "DLL load failed while importing _rust" error, often seen in Python when trying to import cryptography.hazmat.bindings._rust, indicates that the Python interpreter cannot find the necessary shared library (.dll on Windows, .so on Linux, .dylib on macOS) for the _rust module.
​

Which is the Windows DLL that cannot be found? Is it part of Rust? I have rustup installed, and the ".cargo\bin" folder is in the PATH. But that folder does not contain any dll, only executables.

I am using Python 3.12.9

My packages are up to date:

python -m pip list -v

Package Version Location Installer
------------------ --------- ----------------------------------------- ---------
bcrypt 4.3.0 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
certifi 2025.6.15 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
cffi 2.0.0 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
charset-normalizer 3.4.2 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
colorama 0.4.6 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
cryptography 45.0.7 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
idna 3.10 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
pdfminer.six 20250506 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
pip 25.2 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
pycparser 2.23 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
requests 2.32.4 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
six 1.17.0 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
srt 3.5.3 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
tqdm 4.67.1 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
urllib3 2.5.0 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
vosk 0.3.45 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip
websockets 15.0.1 C:\DEV\DEV_TOOLS\Python\Lib\site-packages pip


I have reinstalled Microsoft Visual C++ Redistributable.

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