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Fix Task Scheduler Error 0x80070020: File Locked - Windows Security Won't Open After Malware Cleanup-Microsoft Store Access Denied Even as Admin

Updated 2026-06-18 20:34:50windows-fixes
Fix Task Scheduler Error 0x80070020: File Locked - Windows Security Won't Open After Malware Cleanup-Microsoft Store Access Denied Even as Admin
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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