Add Python to PATH on Windows 10 When 'Command Not Found' - Fix Chrome Certificate Error: Invalid Authority with Proxy Settings-Creating a package.json for Your npm Project

Updated 2026-07-28 15:52:28backup-recovery
Add Python to PATH on Windows 10 When 'Command Not Found' - Fix Chrome Certificate Error: Invalid Authority with Proxy Settings-Creating a package.json for Your npm Project
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.