Clear Microsoft Store Cache to Fix Loading Issues - Fix Outlook Startup Error: Cannot Open the Outlook Window-How to Speed Up Network Drive Access in PowerShell

Updated 2026-06-17 18:56:49developer-tools
Clear Microsoft Store Cache to Fix Loading Issues - Fix Outlook Startup Error: Cannot Open the Outlook Window-How to Speed Up Network Drive Access in PowerShell
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.