Fix BitLocker Error 0x80310017: Authentication Failed - Fix Task Scheduler Error 0x80070020: File Locked-Access Denied When Clearing Cache in Command Prompt

Updated 2026-06-13 22:48:30office-tools
Fix BitLocker Error 0x80310017: Authentication Failed - Fix Task Scheduler Error 0x80070020: File Locked-Access Denied When Clearing Cache in Command Prompt
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.