Fix OneDrive Sync Update Error 0x80004005 - BitLocker High RAM Usage on Large Disks: Fix-Fix 'Cannot Access PST File' Permission Issue in Outlook

Updated 2026-06-14 07:20:48macos-help
Fix OneDrive Sync Update Error 0x80004005 - BitLocker High RAM Usage on Large Disks: Fix-Fix 'Cannot Access PST File' Permission Issue in Outlook
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.