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Fix VS Code Git Authentication Failed Keychain Error - Nginx Upstream Connection Refused: Causes and Fixes-Troubleshooting Cloudflare 522 Timeout After Migration

2026-07-28 19:17:18
Fix VS Code Git Authentication Failed Keychain Error - Nginx Upstream Connection Refused: Causes and Fixes-Troubleshooting Cloudflare 522 Timeout After Migration

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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