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Nginx Upstream Connection Refused: Fixing localhost Errors - Fix Discord Black Screen from Chrome Hardware Acceleration-How to Fix Port in Use Error Docker Compose

Updated 2026-07-28 06:27:53browser-issues
Nginx Upstream Connection Refused: Fixing localhost Errors - Fix Discord Black Screen from Chrome Hardware Acceleration-How to Fix Port in Use Error Docker Compose
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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