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Fix Windows Update Error 0x800f081f with System File Checker - npm package.json Not Found – Wrong Directory Fix-Defender Real-Time Protection Not Working Fix

Updated 2026-07-28 07:51:58office-tools
Fix Windows Update Error 0x800f081f with System File Checker - npm package.json Not Found – Wrong Directory Fix-Defender Real-Time Protection Not Working Fix
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.