Windows Defender High Memory Usage Troubleshooting Checklist - How to Fix Windows Security Error 0x80073b01-Resolve Outlook Cache Folder Access Denied

Updated 2026-06-17 22:36:05macos-help
Windows Defender High Memory Usage Troubleshooting Checklist - How to Fix Windows Security Error 0x80073b01-Resolve Outlook Cache Folder Access Denied
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.