Python venv Not Working on Windows 10: Common Fixes - Fix Nginx Upstream Connection Refused Socket Error-Troubleshooting Python UnicodeDecodeError

Updated 2026-07-28 12:42:45developer-tools
Python venv Not Working on Windows 10: Common Fixes - Fix Nginx Upstream Connection Refused Socket Error-Troubleshooting Python UnicodeDecodeError
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.