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Firefox Not Responding: Clean Reinstall Guide - Fix Permission Denied When Clearing Windows 11 Update Cache-Resolve Windows Update 'Connection Refused' Error

Updated 2026-06-13 13:08:09office-tools
Firefox Not Responding: Clean Reinstall Guide - Fix Permission Denied When Clearing Windows 11 Update Cache-Resolve Windows Update 'Connection Refused' Error
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.