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Fix Windows Update Error 0x80070005: Cannot Install Updates - Fix Windows Defender Error 0x800704ec: Real-Time Protection-Rebuild Windows Search Index Without Losing Data

Updated 2026-07-28 10:44:53office-tools
Fix Windows Update Error 0x80070005: Cannot Install Updates - Fix Windows Defender Error 0x800704ec: Real-Time Protection-Rebuild Windows Search Index Without Losing Data
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.

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