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Fix Nginx 'upstream connection refused' When Talking to PHP-FPM - How to Fix Chrome Certificate Error with Proxy-Windows Defender Real-Time Protection Disabled by Antivirus

Updated 2026-07-28 12:32:12developer-tools

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM - How to Fix Chrome Certificate Error with Proxy-Windows Defender Real-Time Protection Disabled by Antivirus

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.

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