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Fix Edge Sync Not Working After Update - External Monitor Black Screen in Chrome Troubleshooting-Fix Nginx Upstream Connection Refused Behind Cloudflare

Updated 2026-07-28 11:48:23office-tools
Fix Edge Sync Not Working After Update - External Monitor Black Screen in Chrome Troubleshooting-Fix Nginx Upstream Connection Refused Behind Cloudflare
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.