Fix Microsoft Store File Locked Error on Windows 11 - Fix Windows Defender Authentication Failed Error in Windows 10-Troubleshoot Teams Unable to Connect Due to Proxy

Updated 2026-06-15 23:53:27backup-recovery
Fix Microsoft Store File Locked Error on Windows 11 - Fix Windows Defender Authentication Failed Error in Windows 10-Troubleshoot Teams Unable to Connect Due to Proxy
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.