Fix 'Windows Security Cannot Connect to Microsoft Defender' Error - Windows 10 pip Install SSL Error: Certificate Verify Failed-Windows Search 404 Error Troubleshooting

Updated 2026-06-17 22:52:03macos-help
Fix 'Windows Security Cannot Connect to Microsoft Defender' Error - Windows 10 pip Install SSL Error: Certificate Verify Failed-Windows Search 404 Error Troubleshooting
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.