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Fix Windows Defender Security Center Module Missing Error - Fix Nginx 404 Error on Subpages While Index Works-Windows Defender Token Expired – Troubleshooting Steps

Updated 2026-06-13 17:17:39windows-fixes
Fix Windows Defender Security Center Module Missing Error - Fix Nginx 404 Error on Subpages While Index Works-Windows Defender Token Expired – Troubleshooting Steps
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.