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Systemd Service Fails to Start After System Update: Fixes - Windows Defender Real-Time Protection Not Responding-Fix Windows Security Backup Restore Failed Error Code

Updated 2026-06-13 20:12:34developer-tools
Systemd Service Fails to Start After System Update: Fixes - Windows Defender Real-Time Protection Not Responding-Fix Windows Security Backup Restore Failed Error Code
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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