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How to Fix Nginx Upstream Connection Refused Error - How to Get Edge Sync Working Across Devices-Windows Defender Real-Time Protection Grayed Out Fix

Updated 2026-07-28 21:53:58developer-tools
How to Fix Nginx Upstream Connection Refused Error - How to Get Edge Sync Working Across Devices-Windows Defender Real-Time Protection Grayed Out Fix
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.