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Fix Windows Defender Update Error 'Permission Denied' - Port Free But PowerShell Says Allocated: Solved-Fixing OneDrive Certificate Errors Step by Step

Updated 2026-06-15 00:17:46office-tools
Fix Windows Defender Update Error 'Permission Denied' - Port Free But PowerShell Says Allocated: Solved-Fixing OneDrive Certificate Errors Step by Step
Prepare
Execute
Validate
Document

Operational follow-up

  • Record the exact option, command, or setting that changed the result.
  • Keep a rollback note if the workflow affects shared files or team settings.

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