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Fix Firefox Not Responding When Opening a New Tab - Resolve 'Windows Activation Service Not Starting' Error-Windows Defender DNS Error Permission Denied Fix

2026-06-13 14:36:17cloud-software
Fix Firefox Not Responding When Opening a New Tab - Resolve 'Windows Activation Service Not Starting' Error-Windows Defender DNS Error Permission Denied Fix

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.