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Fix Remote Desktop 404 Error from SSL Certificate Issues - Windows Activation Sync Not Working Between PCs-Nginx 502 Bad Gateway PHP-FPM Troubleshooting

2026-06-15 21:48:28cloud-software
Fix Remote Desktop 404 Error from SSL Certificate Issues - Windows Activation Sync Not Working Between PCs-Nginx 502 Bad Gateway PHP-FPM Troubleshooting

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.