Turn on definition retirement

Policy ID
Nis_Consumers_IPS_DisableSignatureRetirement
Scope
Computer Configuration
Supported on
At least Windows Server 2012, Windows 8 or Windows RT
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Windows Components › Microsoft Defender Antivirus › Network Inspection System

Description

This policy setting allows you to configure definition retirement for network protection against exploits of known vulnerabilities. Definition retirement checks to see if a computer has the required security updates necessary to protect it against a particular vulnerability. If the system is not vulnerable to the exploit detected by a definition, then that definition is "retired". If all security intelligence for a given protocal are retired then that protocol is no longer parsed. Enabling this feature helps to improve performance. On a computer that is up-to-date with all the latest security updates, network protection will have no impact on network performance.

If you enable or do not configure this setting, definition retirement will be enabled.

If you disable this setting, definition retirement will be disabled.

Registry

ComputerHKEY_LOCAL_MACHINE
  • DisableSignatureRetirementREG_DWORD

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