The error you're encountering, *"DLL load failed while importing _rust: The
specified module could not be found"*, typically indicates a compatibility
issue between your Python environment and the cryptography library (or one
of its dependencies) used by the Snowflake connector.

Here's how you can troubleshoot and resolve the issue:

### 1. **Check Cryptography and Dependencies Installation**
   - The cryptography package used by Snowflake requires Rust to compile
certain dependencies, especially for Windows.
   - Ensure you have installed the required dependencies with Rust
correctly by following these steps:
     - Open your terminal or command prompt.
     - Run the following command to install the Rust toolchain:
       ```bash
       pip install cryptography
       ```
     - Alternatively, you can try installing it with Rust support enabled:
       ```bash
       pip install cryptography --use-pep517
       ```

### 2. **Check Compatibility with Windows**
   - Since you are on Windows Server 2019, ensure that the Snowflake
connector and its dependencies (like cryptography) are compatible with the
Python version and Windows Server.
   - It might help to uninstall cryptography and reinstall it specifically
with the correct version that supports your environment:
     ```bash
     pip uninstall cryptography
     pip install cryptography==36.0.0  # or the latest version supporting
your setup
     ```

### 3. **Reinstall Snowflake Connector**
   - Uninstall and reinstall the Snowflake connector in case of a corrupt
or incomplete installation:
     ```bash
     pip uninstall snowflake-connector-python
     pip install snowflake-connector-python
     ```

### 4. **Check Apache Configuration (For Production Use)**
   - You mentioned it's working with `python manage.py runserver` but fails
when running on port 80 or domain with Apache.
   - Ensure that Apache has permission to access all necessary Python
packages and environment variables.
   - Verify that the virtual environment (if using one) is activated when
running the application via Apache.
   - You can configure this in the `wsgi.py` file or your Apache config,
ensuring the correct Python environment is being used.

### 5. **DLL Dependencies**
   - If you're still facing issues, you might be missing some DLLs. Install
the [Microsoft Visual C++ Redistributable](
https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170),
which is sometimes needed for some Python libraries to run on Windows.

After following these steps, try running the project again on the desired
port or domain.

All the best 👍

On Fri, Sep 13, 2024 at 8:06 PM Tarun Sharma <[email protected]> wrote:

> Hi
>
> I'm trying to use the snowflake connector and i've installed the all
> cryptography dependencies with latest versions. When i'm trying to run the
> project python manage.py run server then it's working fine. When i tried to
> run on 80 number port or domain then it' showing me this error
>
> DLL load failed while importing _rust: The specified module could not be
> found.
> Here is my OS environment.
> 1. Windows server 2019
> 2. Django working with xampp (apache2)
>
> Please let me know if anyone can help me.
>
> Thanks
>
>
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>


-- 
Thanks and Regards

J. Ranga Bharath
cell: 9110334114

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