Why do I have python39.dll file missing after the installation of python 3.9.1amd64?

  • 1 year ago
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If you are encountering an issue where the python39.dll file is missing after installing Python 3.9.1 (amd64), it may indicate an incomplete or corrupted installation. Here are some steps you can take to resolve this issue:

  1. Reinstall Python: Try reinstalling Python 3.9.1 (amd64) to ensure a complete and proper installation. Download the installer from the official Python website (https://www.python.org) and run it as an administrator. During the installation, make sure to select the "Add Python to PATH" option and let the installation process complete successfully.

  2. Verify Installation Files: Before reinstalling, verify the integrity of the Python installation files you downloaded. Compare the file's MD5 or SHA-256 hash with the hash provided on the Python website. If the hashes do not match, redownload the installation files to ensure they are not corrupted.

  3. Antivirus/Firewall Interference: Temporarily disable your antivirus or firewall software during the installation process. Sometimes, these security measures can interfere with the installation by flagging or blocking certain files. Once the installation is complete, you can re-enable your antivirus and firewall.

  4. Manual DLL Placement: If the python39.dll file is still missing after reinstalling Python, you can try manually placing the DLL file in the appropriate directory. Locate the DLL file (it should be available in the Python installation directory) and copy it to the C:\Windows\System32 directory. After copying the DLL file, try running Python again to see if the issue is resolved.

  5. Verify PATH Environment Variable: Ensure that the PATH environment variable includes the path to the Python installation directory. To check this, open a command prompt and run the following command: echo %PATH%. Verify that the Python installation directory is included in the list of paths displayed.

  6. System Restore: If the above steps do not resolve the issue, you may consider performing a system restore to a point before the Python installation. This can help revert any system changes that might be causing conflicts with the installation.

If the issue persists even after following these steps, it may be helpful to provide more specific details about any error messages or error logs you encounter during the installation or when attempting to run Python.