Fix ERR_CERT_AUTHORITY_INVALID on Localhost - Nginx Upstream Connection Refused: Cloudflare Fix Guide-Win 11 WiFi Connected But No Internet: IPConfig Release/Renew Fix
Prepare
Execute
Validate
Document
Operational follow-up
- Record the exact option, command, or setting that changed the result.
- Keep a rollback note if the workflow affects shared files or team settings.