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Fix MySQL Connection Refused on Localhost - Windows Security Blocking Port Even When Off-Troubleshooting Nginx 502 Bad Gateway

2026-06-13 14:57:23
Fix MySQL Connection Refused on Localhost - Windows Security Blocking Port Even When Off-Troubleshooting Nginx 502 Bad Gateway

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.