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How to Fix Cloudflare 521 Error with Firewall Settings - VS Code Not Showing Git Changes on Ubuntu-Git Clone Connection Timed Out: Troubleshooting Checklist

Updated 2026-07-28 15:13:41browser-issues
How to Fix Cloudflare 521 Error with Firewall Settings - VS Code Not Showing Git Changes on Ubuntu-Git Clone Connection Timed Out: Troubleshooting Checklist
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.