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Troubleshoot Windows Cannot Access Shared Folder - How to Fix Nginx Redirect Loop That Prevents Site Loading-Resolve Cloudflare 521 Error (Port 443 Blocked)

Updated 2026-07-28 19:04:25developer-tools

Troubleshoot Windows Cannot Access Shared Folder - How to Fix Nginx Redirect Loop That Prevents Site Loading-Resolve Cloudflare 521 Error (Port 443 Blocked)

Likely symptom

Likely cause

Safe rollback

Verification route

Repeat the original action, not only a simplified test case.
Restart the app or reload the service after configuration changes.