Fix OneDrive 'Token Expired' Sync Error - Fix Microsoft Store App Not Opening on Startup After Update-Windows Defender Invalid Config Fix

Updated 2026-06-15 15:12:18security-tools
Fix OneDrive 'Token Expired' Sync Error - Fix Microsoft Store App Not Opening on Startup After Update-Windows Defender Invalid Config 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.