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Fix Windows Defender DNS Error Not Working - Cloudflare 521 Error After Update: Fixes That Work-Windows 11 PowerShell Crash Loop Troubleshooting

Updated 2026-06-13 19:15:46cloud-software
Fix Windows Defender DNS Error Not Working - Cloudflare 521 Error After Update: Fixes That Work-Windows 11 PowerShell Crash Loop Troubleshooting
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Operational follow-up

  • Record the exact option, command, or setting that changed the result.
  • Keep a rollback note if the workflow affects shared files or team settings.

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