Fix ERR_NAME_NOT_RESOLVED with CMD: Step-by-Step Guide - Troubleshoot NGINX SSL Backend Connection Refused-Resolving Windows Update Error 0x80070005 and SFC Scan Failures

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.