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How to Fix Git Authentication Failed in VS Code - Cloudflare 521 Error: Proxy Misconfiguration Fix-Windows 11 Update Stuck at 0%: Manual Download Steps

Updated 2026-07-28 13:16:31developer-tools
How to Fix Git Authentication Failed in VS Code - Cloudflare 521 Error: Proxy Misconfiguration Fix-Windows 11 Update Stuck at 0%: Manual Download Steps
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.