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Fix Task Scheduler Proxy Sync Not Working - Resolving Windows Access Denied Error 0x80070005-How to Fix Outlook Authentication Failed Error

Updated 2026-06-14 06:35:24developer-tools
Fix Task Scheduler Proxy Sync Not Working - Resolving Windows Access Denied Error 0x80070005-How to Fix Outlook Authentication Failed 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.