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Fix Git Authentication Failed in VS Code on Mac - Troubleshooting Nginx Upstream Connection Refused 443-Resolve Cloudflare 521 Server Down Error

Updated 2026-07-28 21:34:28developer-tools
Fix Git Authentication Failed in VS Code on Mac - Troubleshooting Nginx Upstream Connection Refused 443-Resolve Cloudflare 521 Server Down Error
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  • Match the tool to the workflow that fails most often, not only the feature list.
  • Keep export format, permissions, and automation limits in the final decision.

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