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Fix Windows Security Network Connection Error - Fix 'Port Already Allocated' Error in Windows Defender on Windows 10-How to Resolve Chrome Sync Errors After a Browser Update

Updated 2026-06-14 14:48:10developer-tools
Fix Windows Security Network Connection Error - Fix 'Port Already Allocated' Error in Windows Defender on Windows 10-How to Resolve Chrome Sync Errors After a Browser Update
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.