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Fix Windows Defender Failed to Start: Registry Repair Steps - Fix Microsoft Store Authentication Failed Due to App Permissions-pip Permission Denied Error in Python Virtual Environment

Updated 2026-06-13 14:31:56developer-tools
Fix Windows Defender Failed to Start: Registry Repair Steps - Fix Microsoft Store Authentication Failed Due to App Permissions-pip Permission Denied Error in Python Virtual Environment
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.