Outlook Shared Mailbox Migration: Setup and Troubleshooting - How to Resolve Store Error 0x80073cf9 on Windows 10/11-Windows Terminal File Locked Error Fix

Updated 2026-06-14 08:24:56browser-issues
Outlook Shared Mailbox Migration: Setup and Troubleshooting - How to Resolve Store Error 0x80073cf9 on Windows 10/11-Windows Terminal File Locked Error Fix
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.