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Fix PuTTY Connection Refused: Check SSH Service - Windows Defender 0x80070422 Troubleshooting Guide-Windows Update DNS Error Troubleshooting

Updated 2026-06-13 13:05:26developer-tools
Fix PuTTY Connection Refused: Check SSH Service - Windows Defender 0x80070422 Troubleshooting Guide-Windows Update DNS Error Troubleshooting
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.