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Fix Windows Activation 'Cannot Connect' Error - Task Scheduler Proxy Error 0x80070643: Fix Guide-Troubleshoot High RAM Usage by Microsoft Defender

Updated 2026-06-14 03:36:14developer-tools
Fix Windows Activation 'Cannot Connect' Error - Task Scheduler Proxy Error 0x80070643: Fix Guide-Troubleshoot High RAM Usage by Microsoft Defender
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.