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Fix Windows Security Invalid Configuration Error Code - Troubleshoot Network Access in Windows Security-Windows Defender Error 0x8007042c Fix Guide

Updated 2026-06-13 16:47:53developer-tools
Fix Windows Security Invalid Configuration Error Code - Troubleshoot Network Access in Windows Security-Windows Defender Error 0x8007042c Fix Guide
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.

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