Fix Task Scheduler Authentication Failed: Scheduled Task Not Running - Windows Search Indexing Off: Causes and Fixes-Troubleshoot PowerShell 401 Token Expiry

Updated 2026-06-18 08:12:06developer-tools
Fix Task Scheduler Authentication Failed: Scheduled Task Not Running - Windows Search Indexing Off: Causes and Fixes-Troubleshoot PowerShell 401 Token Expiry
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.