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Fix Outlook 'Access Denied to Public Folder' Error - OneDrive Sync 502 Error Fix Guide-Clear Windows Update Cache to Fix Slow Performance

Updated 2026-06-14 03:21:10browser-issues
Fix Outlook 'Access Denied to Public Folder' Error - OneDrive Sync 502 Error Fix Guide-Clear Windows Update Cache to Fix Slow Performance
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.