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Fix Microsoft Store High Memory Usage After Update - Fix Windows Defender Authentication Error in Windows 10/11-Microsoft Store Won't Start on Windows 11 – Troubleshooting Guide

Updated 2026-06-13 16:05:28developer-tools
Fix Microsoft Store High Memory Usage After Update - Fix Windows Defender Authentication Error in Windows 10/11-Microsoft Store Won't Start on Windows 11 – Troubleshooting Guide
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.