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How to Fix PuTTY Connection Refused Error - Fix Windows Activation After Hardware Change-Clear Windows Defender Cache Without Rebooting

Updated 2026-06-13 15:19:07developer-tools
How to Fix PuTTY Connection Refused Error - Fix Windows Activation After Hardware Change-Clear Windows Defender Cache Without Rebooting
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.