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How to Fix Chrome ERR_NAME_NOT_RESOLVED Error - Resolve Nginx 502 Bad Gateway in Docker via Environment Variables-How to Resolve Nginx Upstream Refused Connection

Updated 2026-07-28 14:09:48browser-issues
How to Fix Chrome ERR_NAME_NOT_RESOLVED Error - Resolve Nginx 502 Bad Gateway in Docker via Environment Variables-How to Resolve Nginx Upstream Refused Connection
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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