Fix Windows Security High CPU Usage on Windows 11 - Windows 11 Error 0x803fa067 – Troubleshooting Guide-Step-by-Step: Migrate POP3 Email to Microsoft 365

Updated 2026-06-18 19:46:31backup-recovery
Fix Windows Security High CPU Usage on Windows 11 - Windows 11 Error 0x803fa067 – Troubleshooting Guide-Step-by-Step: Migrate POP3 Email to Microsoft 365
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.