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Fix Windows 11 No Internet but Wi-Fi Connected DNS Issue - Resolve 521 Web Server Down with Firewall Changes-Nginx Upstream Connection Refused: Diagnosis and Fixes

Updated 2026-07-28 06:50:53browser-issues
Fix Windows 11 No Internet but Wi-Fi Connected DNS Issue - Resolve 521 Web Server Down with Firewall Changes-Nginx Upstream Connection Refused: Diagnosis and Fixes
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