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Home / office-tools / Fix Windows Defender Error 0x8007042c: Network & Setup Checks - Chrome Permission Denied: Practical Troubleshooting Checklist-How to Fix Connection Refused Due to Firewall in CMD

Fix Windows Defender Error 0x8007042c: Network & Setup Checks - Chrome Permission Denied: Practical Troubleshooting Checklist-How to Fix Connection Refused Due to Firewall in CMD

Updated 2026-06-13 21:38:30office-tools
Fix Windows Defender Error 0x8007042c: Network & Setup Checks - Chrome Permission Denied: Practical Troubleshooting Checklist-How to Fix Connection Refused Due to Firewall in CMD
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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