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DNS Probe Finished NXDOMAIN vs Server Not Found: Key Differences - Fix Nginx Upstream Connection Refused in Proxy Pass-Troubleshooting npm Permission Denied in CI Environments

Updated 2026-07-28 08:07:23macos-help
DNS Probe Finished NXDOMAIN vs Server Not Found: Key Differences - Fix Nginx Upstream Connection Refused in Proxy Pass-Troubleshooting npm Permission Denied in CI Environments
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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