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How to Fix Windows Security Keeps Crashing - Windows Defender Rate Limit Error After Update Fix-Resolve 'Windows Activation Service Not Starting' Error

Updated 2026-06-13 21:46:02office-tools
How to Fix Windows Security Keeps Crashing - Windows Defender Rate Limit Error After Update Fix-Resolve 'Windows Activation Service Not Starting' Error
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.