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Fix Nginx Upstream Connection Refused Error - Windows 11 Wi-Fi No Internet Fix Without Router Restart-Cloudflare Partial DNS Propagation Troubleshooting

2026-07-28 12:10:50
Fix Nginx Upstream Connection Refused Error - Windows 11 Wi-Fi No Internet Fix Without Router Restart-Cloudflare Partial DNS Propagation Troubleshooting

Result check

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

Next references

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