Fix Microsoft Store Error by Changing DNS Settings - How to Resolve Port Already Allocated in Server 2019 Activation-Windows Store Error 0x80073cf9: Step-by-Step Fix Checklist

Updated 2026-06-18 02:37:24macos-help
Fix Microsoft Store Error by Changing DNS Settings - How to Resolve Port Already Allocated in Server 2019 Activation-Windows Store Error 0x80073cf9: Step-by-Step Fix Checklist
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.