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Fix Nginx Upstream Connection Refused Error - Fix Missing Taskbar Icons After Windows 11 Update-Windows Update 0x80070002 Troubleshooting Guide

2026-07-28 22:06:52developer-tools
Fix Nginx Upstream Connection Refused Error - Fix Missing Taskbar Icons After Windows 11 Update-Windows Update 0x80070002 Troubleshooting Guide

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.