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Fix Task Scheduler Authentication Failed Error - Resolve Error 0x80073b01 in Windows Defender-Task Scheduler Invalid Configuration: Fix Guide

Updated 2026-06-17 04:37:22windows-fixes
Fix Task Scheduler Authentication Failed Error - Resolve Error 0x80073b01 in Windows Defender-Task Scheduler Invalid Configuration: Fix 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.