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How to Fix Windows Activation Error 0xc004c003 - Windows Defender Real-Time Protection Not Starting Fix-Fix Windows Activation File Locked Error

Updated 2026-06-13 15:27:36office-tools
How to Fix Windows Activation Error 0xc004c003 - Windows Defender Real-Time Protection Not Starting Fix-Fix Windows Activation File Locked Error
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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