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  1. Windows firewall with advanced security rules are not taking effect ...

  2. Add IP address and URL to Windows Defender Firewall Exclusion.

  3. Can't access advanced settings in Windows Defender Firewall.

  4. Access to Windows firewall advanced settings impossible due to …

  5. Error Opening Windows Firewall: error code:0x609

  6. Windows Firewall Error Code 0x6D9 - Microsoft Community

  7. [SOLVED] Windows Firewall exception list (?) Is this for real?

  8. can't enable windows firewall on services.msc and can't Reinstall …

  9. Windows Defender error 0x6D9 - Microsoft Community

  10. windows firewall error ":there was a problem opening the windows ...