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Fix Outlook Token Expired Authentication Failed Error - Fix Port Already Allocated Error in Microsoft Store on Windows 10-Fix PowerShell Service Unavailable Error Step by Step

Updated 2026-06-14 00:35:41developer-tools
Fix Outlook Token Expired Authentication Failed Error - Fix Port Already Allocated Error in Microsoft Store on Windows 10-Fix PowerShell Service Unavailable Error Step by Step
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.

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