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How to Clear Task Scheduler Cache in Windows 11 - Fix Outlook Invalid Configuration Sync Error-Enable Windows Defender Automatic Startup in Registry

Updated 2026-06-13 21:43:54office-tools
How to Clear Task Scheduler Cache in Windows 11 - Fix Outlook Invalid Configuration Sync Error-Enable Windows Defender Automatic Startup in Registry
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.

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