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Fix Windows Task Scheduler Authentication Failed Credentials Error - How to Resolve Windows Activation SSL Trust Issue-Troubleshooting Outlook 0x80040115 Service Unavailable

Updated 2026-06-17 06:59:25developer-tools
Fix Windows Task Scheduler Authentication Failed Credentials Error - How to Resolve Windows Activation SSL Trust Issue-Troubleshooting Outlook 0x80040115 Service Unavailable
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.