Chrome Sync Not Working on School Chromebook: Fixes - How to Troubleshoot Docker Network Not Found-Nginx Upstream Connection Refused Fix

Updated 2026-07-28 03:51:32backup-recovery
Chrome Sync Not Working on School Chromebook: Fixes - How to Troubleshoot Docker Network Not Found-Nginx Upstream Connection Refused Fix
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.